Revert "Enable MemberImportVisibility check on all targets" #1101

Job	Run time
Construct integration test matrix	2s
Vsock tests	2m 8s
Benchmarks / Construct Benchmarks matrix	2s
Cxx interop / Construct Cxx interop matrix	2s
Unit tests / Construct unit test matrix	4s
Soundness / API breakage check	2m 1s
Soundness / Documentation check	2m 2s
Soundness / Broken symlinks check	5s
Soundness / Format check	59s
Soundness / License headers check	9s
Soundness / Python lint check	7s
Soundness / Shell check	37s
Soundness / Unacceptable language check	3s
Soundness / YAML lint check	2s
Integration tests / Linux (5.9)	15m 35s
Integration tests / Linux (5.10)	14m 5s
Integration tests / Linux (6.0)	16m 13s
Integration tests / Linux (nightly-6.0)	16m 20s
Integration tests / Linux (nightly-main)	16m 47s
Benchmarks / Benchmarks / Linux (5.9)	5m 21s
Cxx interop / Cxx interop / Linux (5.9)	1m 10s
Cxx interop / Cxx interop / Linux (5.10)	1m 8s
Benchmarks / Benchmarks / Linux (5.10)	5m 20s
Benchmarks / Benchmarks / Linux (6.0)	5m 15s
Cxx interop / Cxx interop / Linux (6.0)	1m 21s
Benchmarks / Benchmarks / Linux (nightly-6.0)	6m 37s
Cxx interop / Cxx interop / Linux (nightly-6.0)	1m 47s
Benchmarks / Benchmarks / Linux (nightly-main)	4m 32s
Cxx interop / Cxx interop / Linux (nightly-main)	3m 1s
Unit tests / Unit tests / Linux (5.9)	3m 52s
Unit tests / Unit tests / Linux (5.10)	3m 43s
Unit tests / Unit tests / Linux (6.0)	4m 0s
Unit tests / Unit tests / Linux (nightly-6.0)	4m 37s
Unit tests / Unit tests / Linux (nightly-main)	4m 28s
	2h 23m 35s

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