retirer le required de la piece jointe

WebContent/inscription.jsp

@@ -102,7 +102,7 @@
 						<div class="form-group row" type="text">
 					  		<label  class="col-2 col-form-label" >Pièce jointe</label>
 					  		<div class="col-10">
-					    		<input class="form-control" type="file" required>
+					    		<input class="form-control" type="file" />
 					  		</div>
 						</div>
 					  	<button type="submit" class="btn btn-primary">Submit</button>