[GWP-ASan] Remove c++ standard lib dependency.

Remove c++ standard library dependency for now for @phosek. They have a
complicated build system that breaks with the fuzzer target here.

Also added a todo to remedy later.

Differential Revision: https://reviews.llvm.org/D66568

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@369606 91177308-0d34-0410-b5e6-96231b3b80d8
2 files changed