UV: remove "UV Local View" for UV editing

This feature was added when Blender used tex-face (per-face images),
but doesn't make as much sense since this was removed.

Removing this from UV edit-mode as this wasn't working in any
of the 2.8x releases, causing UV's to be visible but unselectable.

Resolves issue raised in T76958.

release/scripts/startup/bl_ui/space_image.py

@@ -93,9 +93,6 @@ class IMAGE_MT_view(Menu):
         layout.separator()
 
         layout.prop(sima, "use_realtime_update")
-        if show_uvedit:
-            layout.prop(tool_settings, "show_uv_local_view")
-
         layout.prop(uv, "show_metadata")
 
         if paint.brush and (context.image_paint_object or sima.mode == 'PAINT'):