Avoid a needle duplication in KDE vault test

"show_hidden_icons" is the same thing as "desktop_expand_systray".

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

needles/kde/show_hidden_icons.json

@@ -1,15 +0,0 @@
-{
-  "properties": [],
-  "tags": [
-    "show_hidden_icons"
-  ],
-  "area": [
-    {
-      "xpos": 873,
-      "ypos": 736,
-      "width": 27,
-      "height": 22,
-      "type": "match"
-    }
-  ]
-}

tests/apps_startstop/kde/vault.pm

@@ -9,7 +9,7 @@ sub run {
     my $self = shift;
     # As there are no vaults created, we need to list
     # invisible icons.
-    assert_and_click "show_hidden_icons";
+    assert_and_click "desktop_expand_systray";
 
     # Now we should be able to see the Vaults icon,
     # so we will click on it.