added /clear <Player> command and registered it in BauSystem.java

BauSystem_Main/src/de/steamwar/bausystem/commands/CommandClear.java

@@ -52,11 +52,4 @@ public class CommandClear extends BukkitCommand {
         player.getInventory().setLeggings(new ItemStack(Material.AIR));
         player.getInventory().setBoots(new ItemStack(Material.AIR));
     }
-    public List<String> tabComplete(CommandSender sender, String alias, String[] args) throws IllegalArgumentException {
-        Validate.notNull(sender, "Sender cannot be null");
-        Validate.notNull(args, "Arguments cannot be null");
-        Validate.notNull(alias, "Alias cannot be null");
-
-        return super.tabComplete(sender, alias, args);
-    }
 }