This reverts commit 9af5de320b77d3757ea2b7e3d85c67f88dfbabb5. Reason: buildbot breakage (https://lab.llvm.org/buildbot/#/builders/24/builds/3394/steps/10/logs/stdio) "Unexpectedly Passed Tests (1): llvm-libc++-shared.cfg.in :: libcxx/language.support/support.dynamic/libcpp_deallocate.sh.cpp"