Remove kSessionEstablished event

[vivien-apple]

Problem

As far as I can tell this event is not dispatched by anyone. This is just creating distraction when reading code. (Similarly to #20278)

Change overview

• Remove kSessionEstablished

[github-actions]

PR #20300: Size comparison from 13ac032 to 976273a

Increases (3 builds for cc13x2_26x2, k32w)

platform	target	config	section	13ac032	976273a	change	% change
cc13x2_26x2	all-clusters-app	LP_CC2652R7	(read/write)	185796	185844	48	0.0
	pump-app	LP_CC2652R7	(read/write)	164768	164808	40	0.0
k32w	light	k32w061+release	(read/write)	658176	658192	16	0.0
			.text	580868	580884	16	0.0

Decreases (8 builds for cc13x2_26x2, cyw30739, esp32, telink)

platform	target	config	section	13ac032	976273a	change	% change
cc13x2_26x2	all-clusters-app	LP_CC2652R7	(read only)	665427	665379	-48	-0.0
			.rodata	88099	88067	-32	-0.0
			.text	577012	576996	-16	-0.0
	all-clusters-minimal-app	LP_CC2652R7	(read only)	631427	631387	-40	-0.0
			.rodata	77339	77307	-32	-0.0
			.text	553764	553756	-8	-0.0
	pump-app	LP_CC2652R7	(read only)	677447	677407	-40	-0.0
			.rodata	88439	88415	-24	-0.0
			.text	588524	588508	-16	-0.0
cyw30739	ota-requestor-no-progress-logging	cyw930739m2evb_01	(read/write)	581958	581950	-8	-0.0
			.app_xip_area	461576	461568	-8	-0.0
esp32	all-clusters-app	c3devkit	(read only)	1018798	1018728	-70	-0.0
			(read/write)	1484906	1484858	-48	-0.0
			.flash.rodata	214792	214744	-48	-0.0
			.flash.text	1018798	1018728	-70	-0.0
		m5stack	(read only)	1072843	1072775	-68	-0.0
			(read/write)	486984	486944	-40	-0.0
			.flash.rodata	245244	245204	-40	-0.0
			.flash.text	1067459	1067391	-68	-0.0
telink	light-switch-app	tlsr9518adk80d	(read/write)	796560	796552	-8	-0.0
			text	565058	565056	-2	-0.0
	lighting-app	tlsr9518adk80d	text	581380	581378	-2	-0.0

Full report (30 builds for cc13x2_26x2, cyw30739, efr32, esp32, k32w, linux, mbed, nrfconnect, p6, telink)

platform	target	config	section	13ac032	976273a	change	% change
cc13x2_26x2	all-clusters-app	LP_CC2652R7	(read only)	665427	665379	-48	-0.0
			(read/write)	185796	185844	48	0.0
			.bss	74116	74116	0	0.0
			.data	3356	3356	0	0.0
			.rodata	88099	88067	-32	-0.0
			.text	577012	576996	-16	-0.0
	all-clusters-minimal-app	LP_CC2652R7	(read only)	631427	631387	-40	-0.0
			(read/write)	157684	157684	0	0.0
			.bss	73412	73412	0	0.0
			.data	3356	3356	0	0.0
			.rodata	77339	77307	-32	-0.0
			.text	553764	553756	-8	-0.0
	lock-ftd	LP_CC2652R7	(read only)	668095	668095	0	0.0
			(read/write)	173272	173272	0	0.0
			.bss	71148	71148	0	0.0
			.data	3280	3280	0	0.0
			.rodata	76191	76191	0	0.0
			.text	591424	591424	0	0.0
	lock-mtd	LP_CC2652R7	(read only)	617511	617511	0	0.0
			(read/write)	144264	144264	0	0.0
			.bss	66868	66868	0	0.0
			.data	3280	3280	0	0.0
			.rodata	76071	76071	0	0.0
			.text	540952	540952	0	0.0
	pump-app	LP_CC2652R7	(read only)	677447	677407	-40	-0.0
			(read/write)	164768	164808	40	0.0
			.bss	71228	71228	0	0.0
			.data	3280	3280	0	0.0
			.rodata	88439	88415	-24	-0.0
			.text	588524	588508	-16	-0.0
	pump-controller-app	LP_CC2652R7	(read only)	663279	663279	0	0.0
			(read/write)	179056	179056	0	0.0
			.bss	71348	71348	0	0.0
			.data	3276	3276	0	0.0
			.rodata	84279	84279	0	0.0
			.text	578520	578520	0	0.0
	shell	LP_CC2652R7	(read only)	657878	657878	0	0.0
			(read/write)	188848	188848	0	0.0
			.bss	76420	76420	0	0.0
			.data	3360	3360	0	0.0
			.rodata	84846	84846	0	0.0
			.text	572716	572716	0	0.0
cyw30739	light	cyw930739m2evb_01	(read/write)	578894	578894	0	0.0
			.app_xip_area	457664	457664	0	0.0
			.bss	64184	64184	0	0.0
			.data	716	716	0	0.0
			.rodata	0	0	0	0.0
			.text	112	112	0	0.0
	lock	cyw930739m2evb_01	(read/write)	580550	580550	0	0.0
			.app_xip_area	459120	459120	0	0.0
			.bss	64376	64376	0	0.0
			.data	720	720	0	0.0
			.rodata	0	0	0	0.0
			.text	112	112	0	0.0
	ota-requestor-no-progress-logging	cyw930739m2evb_01	(read/write)	581958	581950	-8	-0.0
			.app_xip_area	461576	461568	-8	-0.0
			.bss	63392	63392	0	0.0
			.data	660	660	0	0.0
			.rodata	0	0	0	0.0
			.text	112	112	0	0.0
efr32	lighting-app	BRD4161A	(read/write)	1080364	1080364	0	0.0
			.bss	132996	132996	0	0.0
			.data	2048	2048	0	0.0
			.text	945300	945300	0	0.0
		BRD4161A+rpc	(read/write)	1134724	1134724	0	0.0
			.bss	149676	149676	0	0.0
			.data	2260	2260	0	0.0
			.text	982768	982768	0	0.0
		BRD4161A+rs911x	(read/write)	946468	946468	0	0.0
			.bss	140768	140768	0	0.0
			.data	2048	2048	0	0.0
			.text	803632	803632	0	0.0
	lock-app	BRD4161A+wf200	(read/write)	1127048	1127048	0	0.0
			.bss	144184	144184	0	0.0
			.data	2060	2060	0	0.0
			.text	980780	980780	0	0.0
	window-app	BRD4161A	(read/write)	1074164	1074164	0	0.0
			.bss	134468	134468	0	0.0
			.data	2076	2076	0	0.0
			.text	937596	937596	0	0.0
esp32	all-clusters-app	c3devkit	(read only)	1018798	1018728	-70	-0.0
			(read/write)	1484906	1484858	-48	-0.0
			.dram0.bss	70080	70080	0	0.0
			.dram0.data	14600	14600	0	0.0
			.flash.rodata	214792	214744	-48	-0.0
			.flash.text	1018798	1018728	-70	-0.0
			.iram0.text	62902	62902	0	0.0
		m5stack	(read only)	1072843	1072775	-68	-0.0
			(read/write)	486984	486944	-40	-0.0
			.dram0.bss	75600	75600	0	0.0
			.dram0.data	34144	34144	0	0.0
			.flash.rodata	245244	245204	-40	-0.0
			.flash.text	1067459	1067391	-68	-0.0
			.iram0.text	123267	123267	0	0.0
k32w	light	k32w061+release	(read/write)	658176	658192	16	0.0
			.bss	69516	69516	0	0.0
			.data	1992	1992	0	0.0
			.text	580868	580884	16	0.0
	lock	k32w061+release	(read/write)	684772	684772	0	0.0
			.bss	69980	69980	0	0.0
			.data	2004	2004	0	0.0
			.text	606988	606988	0	0.0
linux	chip-tool-no-interactive-ipv6only	arm64	(read only)	9922676	9922676	0	0.0
			(read/write)	676609	676609	0	0.0
			.bss	42609	42609	0	0.0
			.data	1152	1152	0	0.0
			.data.rel.ro	615592	615592	0	0.0
			.dynamic	528	528	0	0.0
			.got	13448	13448	0	0.0
			.init	24	24	0	0.0
			.init_array	192	192	0	0.0
			.rodata	470260	470260	0	0.0
			.text	7910516	7910516	0	0.0
	thermostat-no-ble	arm64	(read only)	2592612	2592612	0	0.0
			(read/write)	158289	158289	0	0.0
			.bss	65249	65249	0	0.0
			.data	1704	1704	0	0.0
			.data.rel.ro	83240	83240	0	0.0
			.dynamic	528	528	0	0.0
			.got	5072	5072	0	0.0
			.init	24	24	0	0.0
			.init_array	400	400	0	0.0
			.rodata	165348	165348	0	0.0
			.text	2187488	2187488	0	0.0
mbed	lock-app	CY8CPROTO_062_4343W+release	(read only)	6224	6224	0	0.0
			(read/write)	2447376	2447376	0	0.0
			.bss	213940	213940	0	0.0
			.data	5872	5872	0	0.0
			.text	1410020	1410020	0	0.0
nrfconnect	all-clusters-app	nrf52840dk_nrf52840	(read/write)	1173323	1173323	0	0.0
			bss	142900	142900	0	0.0
			rodata	141356	141356	0	0.0
			text	810164	810164	0	0.0
	all-clusters-minimal-app	nrf52840dk_nrf52840	(read/write)	1154159	1154159	0	0.0
			bss	142136	142136	0	0.0
			rodata	133288	133288	0	0.0
			text	799856	799856	0	0.0
p6	all-clusters-app	default	(read/write)	2563024	2563024	0	0.0
			.bss	149120	149120	0	0.0
			.data	2776	2776	0	0.0
			.text	1521288	1521288	0	0.0
	all-clusters-minimal-app	default	(read/write)	2508888	2508888	0	0.0
			.bss	148400	148400	0	0.0
			.data	2776	2776	0	0.0
			.text	1467152	1467152	0	0.0
	light-app	default	(read/write)	2439256	2439256	0	0.0
			.bss	140456	140456	0	0.0
			.data	2592	2592	0	0.0
			.text	1397520	1397520	0	0.0
	lock-app	default	(read/write)	2465672	2465672	0	0.0
			.bss	140304	140304	0	0.0
			.data	2600	2600	0	0.0
			.text	1423936	1423936	0	0.0
telink	light-switch-app	tlsr9518adk80d	(read/write)	796560	796552	-8	-0.0
			bss	70576	70576	0	0.0
			noinit	40416	40416	0	0.0
			text	565058	565056	-2	-0.0
	lighting-app	tlsr9518adk80d	(read/write)	816388	816388	0	0.0
			bss	71420	71420	0	0.0
			noinit	40416	40416	0	0.0
			text	581380	581378	-2	-0.0