fix(@angular/cli): only print options once for schematic --help

Author: hansl

packages/angular/cli/models/schematic-command.ts

@@ -100,11 +100,10 @@ export abstract class SchematicCommand<
 
   public async printHelp(options: T) {
     await super.printHelp(options);
-    const schematicNames = Object.keys(this.description.suboptions || {});
-
-    await super.printHelpOptions();
     this.logger.info('');
 
+    const schematicNames = Object.keys(this.description.suboptions || {});
+
     if (this.description.suboptions) {
       if (schematicNames.length > 1) {
         this.logger.info('Available Schematics:');