[LLDB] Migrate llvm::make_unique to std::make_unique

Now that we've moved to C++14, we no longer need the llvm::make_unique
implementation from STLExtras.h. This patch is a mechanical replacement
of (hopefully) all the llvm::make_unique instances across the monorepo.

Differential revision: https://reviews.llvm.org/D66259

llvm-svn: 368933

lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp

@@ -874,7 +874,7 @@ ObjectFile *ObjectFileMachO::CreateInstance(const lldb::ModuleSP &module_sp,
       return nullptr;
     data_offset = 0;
   }
-  auto objfile_up = llvm::make_unique<ObjectFileMachO>(
+  auto objfile_up = std::make_unique<ObjectFileMachO>(
       module_sp, data_sp, data_offset, file, file_offset, length);
   if (!objfile_up || !objfile_up->ParseHeader())
     return nullptr;