Removes the make_unique shim for c++11 (#1010)

All of our compilers support c++14 now.

hal/src/main/native/include/HAL/cpp/make_unique.h

@@ -1,47 +0,0 @@
-/*----------------------------------------------------------------------------*/
-/* Copyright (c) 2016-2018 FIRST. All Rights Reserved.                        */
-/* Open Source Software - may be modified and shared by FRC teams. The code   */
-/* must be accompanied by the FIRST BSD license file in the root directory of */
-/* the project.                                                               */
-/*----------------------------------------------------------------------------*/
-
-#pragma once
-
-// Define make_unique for C++11-only compilers
-#if __cplusplus == 201103L
-#include <cstddef>
-#include <memory>
-#include <type_traits>
-#include <utility>
-
-namespace std {
-template <class T>
-struct _Unique_if {
-  typedef unique_ptr<T> _Single_object;
-};
-
-template <class T>
-struct _Unique_if<T[]> {
-  typedef unique_ptr<T[]> _Unknown_bound;
-};
-
-template <class T, size_t N>
-struct _Unique_if<T[N]> {
-  typedef void _Known_bound;
-};
-
-template <class T, class... Args>
-typename _Unique_if<T>::_Single_object make_unique(Args&&... args) {
-  return unique_ptr<T>(new T(std::forward<Args>(args)...));
-}
-
-template <class T>
-typename _Unique_if<T>::_Unknown_bound make_unique(size_t n) {
-  typedef typename remove_extent<T>::type U;
-  return unique_ptr<T>(new U[n]());
-}
-
-template <class T, class... Args>
-typename _Unique_if<T>::_Known_bound make_unique(Args&&...) = delete;
-}  // namespace std
-#endif