[sanitizer] revert r200197: the buggy kernel (https://bugzilla.kernel.org/show_bug.cgi?id=67651) is almost unusable with asan even with this workaround (too slow), so this workaround makes no sense. The asan/msan bootstrap bot was changed to use a non-buggy kernel
[sanitizer] revert r200197: the buggy kernel (https://bugzilla.kernel.org/show_bug.cgi?id=67651) is almost unusable with asan even with this workaround (too slow), so this workaround makes no sense. The asan/msan bootstrap bot was changed to use a non-buggy kernel

git-svn-id: c199f293c43da69278bea8e88f92242bf3aa95f7@200217 91177308-0d34-0410-b5e6-96231b3b80d8

llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt,llvm-mirror/compiler-rt