Fix some issues with using padding for text menu

src/definitions/collections/menu.less

@@ -333,9 +333,6 @@
   margin-bottom: @labelOffset;
   padding: @labelVerticalPadding @labelHorizontalPadding;
 }
-.ui.menu .item > .label:before {
-  background-color: @labelBackground;
-}
 .ui.menu .item > .floating.label {
   padding: @labelVerticalPadding @labelHorizontalPadding;
 }
@@ -1038,7 +1035,6 @@ Floated Menu / Item
 /* Header */
 .ui.text.menu .header.item {
   background-color: transparent;
-  padding: 0em;
   opacity: 1;
   color: @textMenuHeaderColor;
   font-size: @textMenuHeaderSize;
@@ -1088,7 +1084,6 @@ Floated Menu / Item
   background-color: transparent;
   border: none;
   box-shadow: none;
-  padding: @textMenuItemPadding;
   font-weight: @textMenuActiveItemFontWeight;
   color: @textMenuActiveItemColor;
 }