removed unnecessary code

game/src/cg_gallery.rpy

@@ -75,16 +75,6 @@ init python:
         end = start + GALLERY_CGS_PER_PAGE
         return galleryItems[start:end]
 
-    # Increments page
-    # (): None
-    def nextPage():
-        galleryPage += 1
-
-    # Decrements page
-    # (): None
-    def prevPage():
-        galleryPage -= 1
-
     # Call to loading the gallery
     loadGallery()