`-mcrtdll` not necessary #3504

Job	Run time
check_format	1m 34s
x86_64-gnu-test-preview_mt	5m 35s
x86_64-gnu-test (1.7.3)	36m 39s
x86_64-gnu-test (1.8.2)	34m 41s
x86_64-musl-test	37m 38s
x86_64-gnu-test (1.9.2)	34m 44s
x86_64-gnu-test (1.10.1)	35m 51s
x86_64-gnu-test (1.11.2)	33m 49s
x86_64-gnu-test (1.12.2)	32m 49s
x86_64-gnu-test (1.13.3)	33m 58s
x86_64-gnu-test (1.14.0)	35m 0s
x86_64-gnu-test (1.0.0, FLAGS=-Dwithout_ffi USE_PCRE1=true)	32m 58s
x86_64-gnu-test (1.1.1, FLAGS=-Dwithout_ffi USE_PCRE1=true)	35m 9s
x86_64-gnu-test (1.2.2, USE_PCRE1=true)	33m 51s
x86_64-gnu-test (1.3.2, USE_PCRE1=true)	35m 3s
x86_64-gnu-test (1.4.1, USE_PCRE1=true)	36m 37s
x86_64-gnu-test (1.5.1, USE_PCRE1=true)	33m 18s
x86_64-gnu-test (1.6.2, USE_PCRE1=true)	33m 25s
	9h 22m 39s

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