[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 llvm-svn: 369606 GitOrigin-RevId: 3dd22585199195d4656154205ab631b8dd406143