Revert "Verify early OK behavior"

src/python/grpcio_tests/tests/tests.json

src/python/grpcio_tests/tests/unit/_compression_test.py

src/python/grpcio_tests/tests/unit/_early_ok_test.py

...on/grpcio_tests/tests/unit/_metadata_code_details_test.py

src/python/grpcio_tests/tests/unit/_metadata_test.py

...ython/grpcio_tests/tests/unit/_resource_exhausted_test.py

summerofcode/ideas.md