Remove unnecessary code * due to `distinctUntilChanged` we will get only one show/hide (true/false) event in `handleSpinnerVisibility` method.
Remove unnecessary code
* due to `distinctUntilChanged` we will get only one show/hide (true/false) event in `handleSpinnerVisibility` method.

mpalourdio/ng-http-loader,mpalourdio/ng-http-loader,mpalourdio/ng-http-loader