Remove all additional string literals with calc

src/definitions/collections/grid.less

@@ -139,7 +139,7 @@
   margin: (@rowSpacing / 2) (@gutterWidth / 2);
 }
 .ui.grid .column + .ui.vertical.divider {
-  height: ~"calc(50% - "(@rowSpacing/2)~")";
+  height: calc(50% - (@rowSpacing / 2));
 }
 
 /* Remove Border on Last Horizontal Segment */
@@ -1077,7 +1077,7 @@
   top: 0em;
   left: 0px;
 
-  width: ~"calc(100% - "@gutterWidth~")";
+  width: calc(100% - @gutterWidth);
   height: 1px;
 
   margin: 0% (@gutterWidth / 2);

src/definitions/collections/menu.less

@@ -211,7 +211,7 @@
 
 /* Menu */
 .ui.menu .dropdown.item .menu {
-  min-width: ~"calc(100% - 1px)";
+  min-width: calc(100% - 1px);
   border-radius: 0em 0em @dropdownMenuBorderRadius @dropdownMenuBorderRadius;
   background: @dropdownBackground;
   margin: @dropdownMenuDistance 0px 0px;

src/definitions/modules/dropdown.less

@@ -1110,7 +1110,7 @@ select.ui.dropdown {
 @media all and (-ms-high-contrast:none) {
   .ui.scrolling.dropdown .menu,
   .ui.dropdown .scrolling.menu {
-    min-width: ~"calc(100% - "@scrollbarWidth~")";
+    min-width: calc(100% - @scrollbarWidth);
   }
 }
 @media only screen and (max-width : @largestMobileScreen) {