fix: remove the common files #256

Job	Run time
downgrade (1.10, core)	16m 39s
downgrade (1.10, downstream)	8m 22s
test (core, 1.10, ubuntu-latest)	16m 0s
downgrade (1.10, wrappers)	9m 55s
test (core, 1.10, macos-latest)	17m 1s
test (core, 1.10, windows-latest)	20m 34s
test (core, 1, ubuntu-latest)	28m 7s
test (core, 1, macos-latest)	16m 8s
test (core, 1, windows-latest)	32m 8s
test (downstream, 1.10, ubuntu-latest)	8m 1s
test (downstream, 1.10, macos-latest)	5m 6s
test (downstream, 1.10, windows-latest)	12m 10s
test (downstream, 1, ubuntu-latest)	17m 20s
test (downstream, 1, macos-latest)	9m 55s
test (downstream, 1, windows-latest)	20m 43s
test (wrappers, 1.10, ubuntu-latest)	9m 28s
test (wrappers, 1.10, macos-latest)	6m 19s
test (wrappers, 1.10, windows-latest)	12m 44s
test (wrappers, 1, ubuntu-latest)	19m 19s
test (wrappers, 1, macos-latest)	12m 21s
test (wrappers, 1, windows-latest)	22m 7s
	5h 20m 27s

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