Remove deprecated ability to pass AuthOptions.force property

Part of #1197.

src/common/lib/client/auth.ts

@@ -284,19 +284,6 @@ class Auth {
       throw new ErrorInfo('Unable to update auth options with incompatible key', 40102, 401);
     }
 
-    if (_authOptions && 'force' in _authOptions) {
-      Logger.logAction(
-        Logger.LOG_ERROR,
-        'Auth.authorize',
-        'Deprecation warning: specifying {force: true} in authOptions is no longer necessary, authorize() now always gets a new token. Please remove this, as in version 1.0 and later, having a non-null authOptions will overwrite stored library authOptions, which may not be what you want'
-      );
-      /* Emulate the old behaviour: if 'force' was the only member of authOptions,
-       * set it to null so it doesn't overwrite stored. TODO: remove in version 1.0 */
-      if (Utils.isOnlyPropIn(_authOptions, 'force')) {
-        _authOptions = null;
-      }
-    }
-
     this._forceNewToken(
       tokenParams as API.Types.TokenParams,
       _authOptions,

src/common/lib/util/utils.ts

@@ -81,15 +81,6 @@ export function isEmpty(ob: Record<string, unknown> | unknown[]): boolean {
   return true;
 }
 
-export function isOnlyPropIn(ob: Record<string, unknown>, property: string): boolean {
-  for (const prop in ob) {
-    if (prop !== property) {
-      return false;
-    }
-  }
-  return true;
-}
-
 /*
  * Determine whether or not an argument to an overloaded function is
  * undefined (missing) or null.

test/realtime/auth.test.js

@@ -972,14 +972,6 @@ define(['ably', 'shared_helper', 'async', 'chai'], function (Ably, helper, async
           'Check authorize completely replaces stored authOptions with passed in ones'
         );
 
-        /* TODO remove for lib version 1.0 */
-        realtime.auth.authorize(null, { authUrl: 'http://invalid' });
-        realtime.auth.authorize(null, { force: true });
-        expect(realtime.auth.authOptions.authUrl).to.equal(
-          'http://invalid',
-          'Check authorize does *not* replace stored authOptions when the only option is "force" in 0.9, for compatibility with 0.8'
-        );
-
         closeAndFinish(done, realtime);
       } catch (err) {
         closeAndFinish(done, realtime, err);