test: v4l2_subdevice: Remove std::move() that prevents copy elision

Moving a temporary value prevents copy elision. Remove it.

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

test/v4l2_subdevice/v4l2_subdevice_test.cpp

@@ -39,7 +39,7 @@ int V4L2SubdeviceTest::init()
 	}
 
 	DeviceMatch dm("vimc");
-	media_ = std::move(enumerator_->search(dm));
+	media_ = enumerator_->search(dm);
 	if (!media_) {
 		cerr << "Unable to find \'vimc\' media device node" << endl;
 		return TestSkip;