Add conditional to show hint when maxLength is set

src/app/shared/dialogs/prompt-dialog/prompt-dialog.component.html

@@ -35,7 +35,7 @@
           resizeToFitContent
           [placeholder]="inputName">
         </textarea>
-        <mat-hint align="end">
+        <mat-hint align="end" *ngIf="maxLength">
           {{ inputForm.value.value.length }} / {{ maxLength }}
         </mat-hint>
       </mat-form-field>

src/app/shared/dialogs/prompt-dialog/prompt-dialog.component.ts

@@ -10,7 +10,6 @@ import {
 } from '@angular/forms';
 import { Observable } from 'rxjs';
 import { Year } from '@app/core/models/year';
-import { NgSwitch } from '@angular/common';
 
 @Component({
   selector: 'cse-prompt-dialog',