Remove no-longer-used 'uptodate' needle

Since we tweaked the g-s workaround not to use this any more, we
don't need it.

Signed-off-by: Adam Williamson <awilliam@redhat.com>

needles/gnome/desktop_package_tool_uptodate.json

@@ -1,16 +0,0 @@
-{
-  "area": [
-    {
-      "ypos": 366,
-      "type": "match",
-      "width": 91,
-      "height": 77,
-      "xpos": 471
-    }
-  ],
-  "properties": [],
-  "tags": [
-    "DESKTOP-gnome",
-    "desktop_package_tool_uptodate"
-  ]
-}