clean variables

src/client/styles/scss/_layout_variable.scss

@@ -1,30 +1,8 @@
 /* color variables */
 
-/* green */
-$grw-base-green: rgb(7, 146, 72);
-$grw-mos-green: rgb(5, 70, 35);
-$grw-light-green: rgb(204, 238, 220);
-$grw-white-green: #f8fffb;
-$grw-sea-green: seagreen;
-
-.bg-grw-green {
-  background: $grw-base-green;
-}
-
-.bg-grw-mos-green {
-  background: $grw-mos-green;
-}
-
-.bg-grw-light-green {
-  background: $grw-light-green;
-}
-
 /* blue */
 $grw-alice-blue: aliceblue;
 
 /* gray */
 $grw-line-gray: #dee2e6;
 $grw-line-light-gray: #ddd;
-
-/* white */
-$grw-floral-white: floralwhite;