[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/Process/NetBSD/NativeProcessNetBSD.cpp

@@ -659,7 +659,7 @@ NativeThreadNetBSD &NativeProcessNetBSD::AddThread(lldb::tid_t thread_id) {
   if (m_threads.empty())
     SetCurrentThreadID(thread_id);
 
-  m_threads.push_back(llvm::make_unique<NativeThreadNetBSD>(*this, thread_id));
+  m_threads.push_back(std::make_unique<NativeThreadNetBSD>(*this, thread_id));
   return static_cast<NativeThreadNetBSD &>(*m_threads.back());
 }