Remove new KDE log out entry needle again

Turns out we don't need it, the failed test was run before I
dropped the match level.

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

needles/kde/log_out_entry-kde-20200825.json

@@ -1,15 +0,0 @@
-{
-  "area": [
-    {
-      "height": 13,
-      "xpos": 78,
-      "ypos": 285,
-      "type": "match",
-      "width": 51
-    }
-  ],
-  "properties": [],
-  "tags": [
-    "log_out_entry"
-  ]
-}