Revert "Check if current ld.config.txt files is backward compatible"

This reverts commit 15bac6bd.

Reason for revert:
This caused build errors in mac_sdk build.
Seems that our mac builders do not have python3.

  env: python3: No such file or directory

Bug: 112738739
Bug: 111417344
Test: presubmit
Change-Id: I9796f2e9a54a66fc7a4e1c780c8c272b98ed437f