Remove arrows on numeric inputs (#8516)

* Nothing needs the arrows for input, especially 2FA

* Moved into LESS

public/less/_form.less

@@ -140,6 +140,16 @@
                 width: 100% !important;
             }
         }
+
+        input[type=number] {
+            -moz-appearance: textfield;
+        }
+
+        input::-webkit-outer-spin-button,
+        input::-webkit-inner-spin-button {
+            -webkit-appearance: none;
+            margin: 0;
+        }
     }
 }