Merge pull request #14453 from vsn4ik/less_empty_lines

Less: Remove empty lines and blanks.

less/dropdowns.less

@@ -211,4 +211,3 @@
     }
   }
 }
-

less/list-group.less

@@ -75,7 +75,7 @@ a.list-group-item {
     background-color: @list-group-disabled-bg;
     color: @list-group-disabled-color;
     cursor: not-allowed;
-    
+
     // Force color to inherit for custom content
     .list-group-item-heading {
       color: inherit;

less/mixins/labels.less

@@ -2,7 +2,7 @@
 
 .label-variant(@color) {
   background-color: @color;
-  
+
   &[href] {
     &:hover,
     &:focus {

less/pager.less

@@ -51,5 +51,4 @@
       cursor: not-allowed;
     }
   }
-
 }

less/popovers.less

@@ -131,5 +131,4 @@
       bottom: -@popover-arrow-width;
     }
   }
-
 }

less/print.less

@@ -4,7 +4,6 @@
 // Source: https://github.com/h5bp/html5-boilerplate/blob/master/css/main.css
 
 @media print {
-
   * {
     text-shadow: none !important;
     color: #000 !important; // Black prints faster: h5bp.com/s
@@ -97,5 +96,4 @@
       border: 1px solid #ddd !important;
     }
   }
-
 }

less/variables.less

@@ -841,5 +841,3 @@
 @dl-horizontal-offset:        @component-offset-horizontal;
 //** Horizontal line color.
 @hr-border:                   @gray-lighter;
-
-