refactor(@angular/cli): remove command type

It was really unused.

Author: hansl

packages/angular/cli/models/interface.ts

@@ -142,14 +142,6 @@ export enum CommandScope {
   Default = InProject,
 }
 
-export enum CommandType {
-  Custom = 'custom',
-  Architect = 'architect',
-  Schematic = 'schematics',
-
-  Default = Custom,
-}
-
 /**
  * A description of a command, its metadata.
  */
@@ -190,11 +182,6 @@ export interface CommandDescription {
    */
   scope: CommandScope;
 
-  /**
-   * Type of command.
-   */
-  type: CommandType;
-
   /**
    * Whether this command should be hidden from a list of all commands.
    */

packages/angular/cli/utilities/json-schema.ts

@@ -13,7 +13,6 @@ import {
   CommandConstructor,
   CommandDescription,
   CommandScope,
-  CommandType,
   Option,
   OptionType,
 } from '../models/interface';
@@ -90,7 +89,6 @@ export async function parseJsonSchemaToCommandDescription(
     ...(longDescription ? { longDescription } : {}),
     ...(usageNotes ? { usageNotes } : {}),
     hidden,
-    type,
     options,
     aliases,
     scope,