Assorted cleanup.

src/main/java/com/gmail/nossr50/party/PartyManager.java

@@ -459,16 +459,6 @@ public final class PartyManager {
         return !party.isLocked() || party.getLeader().equalsIgnoreCase(mcMMOPlayer.getPlayer().getName());
     }
 
-    /**
-     * Check if a string is a valid party name.
-     *
-     * @param partyName The party name to check
-     * @return true if this is a valid party, false otherwise
-     */
-    public static boolean isParty(String partyName) {
-        return getParty(partyName) != null;
-    }
-
     /**
      * Load party file.
      */