Revert "[Clang-REPL] Fix crash during `__run_exit_handlers` with dynamic libraries. (#117475)"
This reverts commit 30ad53b92cec0cff9679d559edcc5b933312ba0c as it breaks
systems that don't have a systemwide libc++ or libstdc++ installed. It should
be rewritten to not invoke the system linker. In the meanwhile, reverting
to unblock the bots.