Revert "[compiler-rt] Also consider SIGPROF as a synchronous signal" (#86416)

Reverting #85188 with follow up patches.

This reverts commit 362d26366d0175f01ffb6085eb747a6e40f01147.
This reverts commit c9bdeabdf4b46fbf1f6a9fcbf9cd61d460b18c08.
This reverts commit 6bc6e1ace9fa8453e164fa04b5d9acd5a77e089a.
This reverts commit 01fa550ff654d6724e6da54c877032baeddff14b.
This reverts commit ddcbab37ac0e5743a8d39be3dd48d967f4c85504.

GitOrigin-RevId: 4acd84e7ccce6a2865f60cd2adc37a335d4f35ce
6 files changed