Remove command tree method as that'll be done upon registration

Author: dualspiral

src/main/java/org/spongepowered/api/command/manager/CommandManager.java

@@ -138,7 +138,7 @@ public interface CommandManager {
      *                  aliases
      * @param container The {@link PluginContainer} to register the command for
      * @param commandTree The {@link CommandTreeBuilder} that represents this command
-     *                    structure
+     *                    structure.
      * @param requirement What a {@link CommandCause} needs to fulfil in order for this
      *                    command to be executed.
      * @param primaryAlias The first command alias to register

src/main/java/org/spongepowered/api/command/registrar/CommandRegistrar.java

@@ -38,6 +38,7 @@
 
 import java.util.List;
 import java.util.Optional;
+import java.util.function.Predicate;
 
 /**
  * {@link CommandRegistrar}s are the entry point for plugins wishing to provide
@@ -47,7 +48,7 @@
  * <p>This interface <em>does not</em> have a defined way to register commands,
  * it is up to the implementor to provide such a method. Such a registration
  * method <strong>must</strong> call
- * {@link CommandManager#registerAlias(CommandRegistrar, PluginContainer, String, String...)}
+ * {@link CommandManager#registerAlias(CommandRegistrar, PluginContainer, CommandTreeBuilder.Basic, Predicate, String, String...)}
  * to indicate that they wish to take control of certain aliases. Beyond this
  * call, the {@link CommandRegistrar} will only need to retain the link between
  * the primary alias and the command to execute, as the {@link CommandManager}
@@ -144,15 +145,4 @@ public interface CommandRegistrar extends CatalogType {
      */
     void unregister(CommandMapping mapping);
 
-    /**
-     * Called when an update to the client's command list is requested,
-     * for client side completion.
-     *
-     * @param commandCause The {@link CommandCause} to build the tree for
-     * @param builder The builder to supply command information to
-     */
-    // TODO: Should this just be a player, as that's the only entity the tree
-    // will be sent for?
-    void completeCommandTree(CommandCause commandCause, CommandTreeBuilder.Basic builder);
-
 }