LibWeb: Remove unnecessary apply_own_clip_rect() in ImagePaintable

Own clip rect is alredy applied in `PaintableBox::before_paint()` for
all image paintables, so there's no need to do it once again in
`ImagePaintable::paint()`.

Libraries/LibWeb/Painting/ImagePaintable.cpp

@@ -152,9 +152,7 @@ void ImagePaintable::paint(PaintContext& context, PaintPhase phase) const
                 context.rounded_device_pixels(scaled_bitmap_height).value()
             };
 
-            apply_own_clip_rect(context, phase);
             context.display_list_recorder().draw_scaled_immutable_bitmap(draw_rect, image_int_rect_device_pixels, *bitmap, scaling_mode);
-            clear_own_clip_rect(context, phase);
         }
     }
 }