_sass: Remove custom/overrides.scss

_sass/custom/custom.scss

 // Just the Class dependencies
 @import 'variables';
-@import 'overrides';
 @import 'mixins';
 @import 'card';
 

_sass/custom/overrides.scss

-body {
-  text-rendering: optimizeLegibility;
-}
-
-table ul:last-child {
-  margin-bottom: 0;
-}