removed duplicated styles, added missing include to functions

spearhead/assets/sass/_archive.scss

@@ -10,10 +10,6 @@
         color: var(--entry-header--color);
     }
 
-    .entry-title {
-        font-size: var(--heading--font-size-h2);
-    }
-
     .site-main > article:first-of-type {
         margin-top: 0;
     }

spearhead/style-rtl.css

@@ -297,10 +297,6 @@ Tags: one-column, flexible-header, accessibility-ready, custom-colors, custom-me
 	color: var(--entry-header--color);
 }
 
-.archive .entry-title {
-	font-size: var(--heading--font-size-h2);
-}
-
 .archive .site-main > article:first-of-type {
 	margin-top: 0;
 }

spearhead/style.css

@@ -297,10 +297,6 @@ Tags: one-column, flexible-header, accessibility-ready, custom-colors, custom-me
 	color: var(--entry-header--color);
 }
 
-.archive .entry-title {
-	font-size: var(--heading--font-size-h2);
-}
-
 .archive .site-main > article:first-of-type {
 	margin-top: 0;
 }