libcamera: Switch from utils::make_unique to std::make_unique

Now that we're using C++-14, drop utils::make_unique for
std::make_unique.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

src/libcamera/ipa_manager.cpp

@@ -264,7 +264,7 @@ std::unique_ptr<IPAInterface> IPAManager::createIPA(PipelineHandler *pipe,
 	if (!ctx)
 		return nullptr;
 
-	return utils::make_unique<IPAContextWrapper>(ctx);
+	return std::make_unique<IPAContextWrapper>(ctx);
 }
 
 } /* namespace libcamera */