Fixed csslint error

build/less/core.less

@@ -111,7 +111,7 @@ body {
   }
 }
 
-body.hold-transition { /* Fix for IE */
+body.hold-transition { 
     .content-wrapper, 
     .right-side, 
     .main-footer, 
@@ -119,6 +119,7 @@ body.hold-transition { /* Fix for IE */
     .left-side, 
     .main-header > .navbar,
     .main-header .logo {
+      /* Fix for IE */
       .transition(none);
     }
 }

dist/css/AdminLTE.css

@@ -129,9 +129,6 @@ body {
 .fixed.layout-boxed .wrapper {
   max-width: 100%;
 }
-body.hold-transition {
-  /* Fix for IE */
-}
 body.hold-transition .content-wrapper,
 body.hold-transition .right-side,
 body.hold-transition .main-footer,
@@ -139,6 +136,7 @@ body.hold-transition .main-sidebar,
 body.hold-transition .left-side,
 body.hold-transition .main-header > .navbar,
 body.hold-transition .main-header .logo {
+  /* Fix for IE */
   -webkit-transition: none;
   -o-transition: none;
   transition: none;