perf: Remove normalize_video step - saves 50-90 sec per scene

modules/video_creator/services/short_creator.py

@@ -256,11 +256,8 @@ class ShortCreator:
                     logger.warning(f"Downloaded video {video_path} is too small")
                     raise Exception("Downloaded video is invalid")
                 
-                # Normalize video
-                norm_path = video_path.with_suffix(".norm.mp4")
-                FFmpegUtils.normalize_video(video_path, norm_path)
-                video_path.unlink()
-                norm_path.rename(video_path)
+                # Skip normalize - Pexels/Pixabay videos are already H.264 encoded
+                # This saves 50-90 seconds per scene!
                 
                 video_found = True
                 exclude_video_ids.append(selected_video["id"])  # Fixed: use selected_video