Remove stale argumentRejected method on Option (#1599)

Author: shadowspawn

typings/index.d.ts

@@ -125,12 +125,6 @@ export class Option {
    */
   hideHelp(hide?: boolean): this;
 
-  /**
-   * Validation of option argument failed.
-   * Intended for use from custom argument processing functions.
-   */
-  argumentRejected(messsage: string): never;
-
   /**
    * Only allow option value to be one of choices.
    */

typings/index.test-d.ts

@@ -368,9 +368,6 @@ expectType<commander.Option>(baseOption.hideHelp());
 expectType<commander.Option>(baseOption.hideHelp(true));
 expectType<commander.Option>(baseOption.hideHelp(false));
 
-// argumentRejected
-expectType<never>(baseOption.argumentRejected('failed'));
-
 // choices
 expectType<commander.Option>(baseOption.choices(['a', 'b']));