Remove unused video file from .gitignore

.gitignore

@@ -13,7 +13,4 @@ db/fitz.sqlite
 db/fitz.sqlite-wal
 db/fitz.sqlite-shm
 
-# Original raw video footage, 27MB, not referenced anywhere on the live
+.hintrc
-# site (hero background ended up using assets/brick-texture.png instead).
-# Remove this line if you want the raw footage tracked in git too.
-assets/video.mp4