[compiler-rt] [compiler-rt] Remove %T from shared object substitutions (PR #155302)

[Hans Wennborg via llvm-commits]

zmodem wrote:

This appears to have broken the tests on Mac, see e.g. https://green.lab.llvm.org/job/llvm.org/job/clang-stage1-RA/5377/

I'm preparing a revert.

https://github.com/llvm/llvm-project/pull/155302