Fix #160 : suppression de la validation sur "step"

src/app/components/dialog-edit-param-values/dialog-edit-param-values.component.html

@@ -51,15 +51,10 @@
             <mat-form-field>
                 <input matInput class="form-control" type="number" inputmode="numeric" name="step-value" step="0.01"
                     [placeholder]="uitextPasVariation" [(ngModel)]="stepValue" #step="ngModel" name="step"
-                    [appJalhydModelValidationStep]="param" required pattern="^-?([0-9]*\.)?([0-9]+[Ee]-?)?[0-9]+$">
+                    required pattern="^-?([0-9]*\.)?([0-9]+[Ee]-?)?[0-9]+$">
 
                     <mat-error *ngIf="step.errors">
-                        <div *ngIf="step.errors.required || step.errors.pattern">
-                            {{ uitextMustBeANumber }}
-                        </div>
-                        <div *ngIf="! step.errors.required && step.errors.jalhydModelStep">
-                            {{ step.errors.jalhydModelStep.message }}
-                        </div>
+                        {{ uitextMustBeANumber }}
                     </mat-error>
             </mat-form-field>
         </form>