[turbofan] Remove obsolete unique.h includes in TurboFan.

src/unique.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_HYDROGEN_UNIQUE_H_
-#define V8_HYDROGEN_UNIQUE_H_
+#ifndef V8_UNIQUE_H_
+#define V8_UNIQUE_H_
 
 #include <ostream>  // NOLINT(readability/streams)
 
 #include "src/base/functional.h"
 #include "src/handles.h"
-#include "src/objects-inl.h"  // TODO(everyone): Fix our inl.h crap
 #include "src/utils.h"
 #include "src/zone.h"
 
 namespace v8 {
 namespace internal {
 
 
 template <typename T>
 class UniqueSet;
 
@@ skipping 328 matching lines @@
         memcpy(new_array, array_, size_ * sizeof(Unique<T>));
       }
       capacity_ = new_capacity;
       array_ = new_array;
     }
   }
 };
 
 } }  // namespace v8::internal
 
-#endif  // V8_HYDROGEN_UNIQUE_H_
+#endif  // V8_UNIQUE_H_