De-dupe anaconda root password spoke needle

The anaconda help test had its own version, it doesn't need it.

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

needles/anaconda/main_hub/root_password.json

@@ -1,15 +0,0 @@
-{
-  "area": [
-    {
-      "xpos": 247,
-      "ypos": 488,
-      "width": 35,
-      "height": 29,
-      "type": "match"
-    }
-  ],
-  "properties": [],
-  "tags": [
-    "anaconda_main_hub_root_password"
-  ]
-}

tests/anaconda_help.pm

@@ -51,7 +51,7 @@ sub run {
     # need to set a root password or create a user; on other flavors
     # we must
     unless (get_var("DESKTOP") eq "gnome" ) {
-        assert_and_click "anaconda_main_hub_root_password";
+        assert_and_click "anaconda_install_root_password";
         # from anaconda-35.22.1 onwards, we have to click 'enable root
         # account' before typing the password. For older versions,
         # clicking this needle does nothing but is harmless