Remove arrows on numeric inputs (#8516)

* Nothing needs the arrows for input, especially 2FA

* Moved into LESS

public/css/index.css

@@ -396,6 +396,8 @@ i.icon.centerlock{top:1.5em}
 .user.activate form .inline.field>label,.user.forgot.password form .inline.field>label,.user.reset.password form .inline.field>label,.user.signin form .inline.field>label,.user.signup form .inline.field>label{width:200px}
 @media only screen and (max-width:768px){.user.activate form .inline.field>label,.user.activate form input,.user.forgot.password form .inline.field>label,.user.forgot.password form input,.user.reset.password form .inline.field>label,.user.reset.password form input,.user.signin form .inline.field>label,.user.signin form input,.user.signup form .inline.field>label,.user.signup form input{width:100%!important}
 }
+.user.activate form input[type=number],.user.forgot.password form input[type=number],.user.reset.password form input[type=number],.user.signin form input[type=number],.user.signup form input[type=number]{-moz-appearance:textfield}
+.user.activate form input::-webkit-inner-spin-button,.user.activate form input::-webkit-outer-spin-button,.user.forgot.password form input::-webkit-inner-spin-button,.user.forgot.password form input::-webkit-outer-spin-button,.user.reset.password form input::-webkit-inner-spin-button,.user.reset.password form input::-webkit-outer-spin-button,.user.signin form input::-webkit-inner-spin-button,.user.signin form input::-webkit-outer-spin-button,.user.signup form input::-webkit-inner-spin-button,.user.signup form input::-webkit-outer-spin-button{-webkit-appearance:none;margin:0}
 .repository.new.fork form,.repository.new.migrate form,.repository.new.repo form{margin:auto}
 .repository.new.fork form .ui.message,.repository.new.migrate form .ui.message,.repository.new.repo form .ui.message{text-align:center}
 @media only screen and (min-width:768px){.repository.new.fork form,.repository.new.migrate form,.repository.new.repo form{width:800px!important}

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;
+        }
     }
 }