Revert "[kokoro python] Log cflags when build modules, for debugging" am: 99fd776ddd am: 6f716a52fb am: 786f1ca1d9

Original change: https://android-review.googlesource.com/c/platform/external/python/cpython3/+/1576393

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I10e2b92a655e952c54026fd86a7262593e45c5fa