Remove padding attributes from Dark Mode variables

At some point in development some padding variables were added to the 'dark mode' media query block duplicating values that were since changed.

Rather than bringing these into sync these padding-related values are being removed from the dark mode query.

spearhead/variables.css

@@ -113,7 +113,5 @@
 		--sticky-posts--alt-color-background: #2d3139;
 		--primary-nav--color-background: var(--sticky-posts--alt-color-background);
 		--primary-nav--dropdown-color-link: var(--global--color-foreground);
-		--button--padding-vertical: 24px;
-		--button--padding-horizontal: 32px;
 	}
 }