General cleanup of unused variable warnings

indra/newview/llviewerdisplay.cpp

@@ -1159,7 +1159,6 @@ void render_hud_attachments()
 	if (LLPipeline::sShowHUDAttachments && !gDisconnected && setup_hud_matrices())
 	{
 		LLCamera hud_cam = *LLViewerCamera::getInstance();
-		LLVector3 origin = hud_cam.getOrigin();
 		hud_cam.setOrigin(-1.f,0,0);
 		hud_cam.setAxes(LLVector3(1,0,0), LLVector3(0,1,0), LLVector3(0,0,1));
 		LLViewerCamera::updateFrustumPlanes(hud_cam, TRUE);