Revert "[compiler-rt][test] Heed COMPILER_RT_DEBUG when compiling unittests"

Breaks some bots, details in https://reviews.llvm.org/D91620

This reverts commit 93b1256e38f63a81561288b9a90c5d52af63cb6e.

GitOrigin-RevId: 68f4ceaf9b4e68c111e3cccc3cc09ea7783fdf0d
8 files changed