[Mobile] Moved variables

Moved variables used for amount of
side bar and slide amount into the
mobile/_constants.scss file.

platform/commonUI/general/res/sass/mobile/_layout.scss

@@ -23,12 +23,6 @@
 // style="min-width: 150px; max-width: 800px; width: 25%;"
 // NOTE: Added to adjust the browse folder tree list view
 
-$leftPhone: 46%;
-$leftTab: 28%;
-
-$hideRatioPhone: 1.8;
-$hideRatioTab: 1.38;
-
 .holder-hide {
     @include phone {
         @include transition-duration(.2s);