Refactoring

ui-ngx/src/app/shared/models/settings.models.ts

@@ -14,9 +14,8 @@
 /// limitations under the License.
 ///
 
-import { ValidatorFn, Validators } from '@angular/forms';
+import { ValidatorFn } from '@angular/forms';
 import { isNotEmptyStr, isNumber } from '@core/utils';
-import { number, string } from 'prop-types';
 
 export const smtpPortPattern: RegExp = /^([0-9]{1,4}|[1-5][0-9]{4}|6[0-4][0-9]{3}|65[0-4][0-9]{2}|655[0-2][0-9]|6553[0-5])$/;