Drop walker + elephant

default/themed/walker.css.tpl

@@ -1,6 +0,0 @@
-@define-color selected-text {{ accent }};
-@define-color text {{ foreground }};
-@define-color base {{ background }};
-@define-color border {{ foreground }};
-@define-color foreground {{ foreground }};
-@define-color background {{ background }};