[Glitch] Remove the access token from Redux & context

Port 2c5ab8f647 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/test_helpers.tsx

@@ -17,7 +17,6 @@ class FakeIdentityWrapper extends Component<
       signedIn: PropTypes.bool.isRequired,
       accountId: PropTypes.string,
       disabledAccountId: PropTypes.string,
-      accessToken: PropTypes.string,
     }).isRequired,
   };
 
@@ -26,7 +25,6 @@ class FakeIdentityWrapper extends Component<
       identity: {
         signedIn: this.props.signedIn,
         accountId: '123',
-        accessToken: 'test-access-token',
       },
     };
   }