clean scss

packages/core/scss/bootstrap/override/helpers/_color-bg.scss

@@ -1,9 +1,7 @@
 // All-caps `RGBA()` function used because of this Sass bug: https://github.com/sass/node-sass/issues/2251
 @each $color, $value in $theme-colors {
   .text-bg-#{$color} {
-    // color: color-contrast($value) if($enable-important-utilities, !important, null);
     color: var(--#{$prefix}#{$color}) if($enable-important-utilities, !important, null);
-    // background-color: RGBA(var(--#{$prefix}#{$color}-rgb), var(--#{$prefix}bg-opacity, 1)) if($enable-important-utilities, !important, null);
     background-color: var(--#{$prefix}#{$color}-bg-subtle) if($enable-important-utilities, !important, null);
     border: 1px solid var(--#{$prefix}#{$color}-border-subtle) if($enable-important-utilities, !important, null);
   }