[compiler-rt] Revert "[compiler-rt] Avoid generating coredumps when piped to a tool" (PR #85390)

[Alexander Richardson via llvm-commits]

arichardson wrote:

> @arichardson compiler-rt/test/sanitizer_common/TestCases/corelimit.cpp needs an update

Hmm sounds like rlimit was already zero, will need to relax the test to accept zero or one to handle the min().

https://github.com/llvm/llvm-project/pull/85390