Update to Minecraft 1.11

By: md_5 <git@md-5.net>

paper-api/src/main/java/org/bukkit/command/Command.java

@@ -57,21 +57,6 @@ public abstract class Command {
      */
     public abstract boolean execute(CommandSender sender, String commandLabel, String[] args);
 
-    /**
-     * Executed on tab completion for this command, returning a list of
-     * options the player can tab through.
-     *
-     * @deprecated This method is not supported and returns null
-     * @param sender Source object which is executing this command
-     * @param args All arguments passed to the command, split via ' '
-     * @return a list of tab-completions for the specified arguments. This
-     *     will never be null. List may be immutable.
-     */
-    @Deprecated
-    public List<String> tabComplete(CommandSender sender, String[] args) {
-        return null;
-    }
-
     /**
      * Executed on tab completion for this command, returning a list of
      * options the player can tab through.