Revert "Fix locating of COMPILER_RT_LIBCXX_PATH"

clang-aarch64-sve-vla crashes in msan
clang-s390x-linux-lnt fails to compile libcxx

This reverts commit 14b2b67cd7d5e439c4bc5c8051f68a5fbb683480.

GitOrigin-RevId: bfe5e81826f4d98eeaa2dac08aa67bd0d7a95514
1 file changed