remove unused CSS code, fixup unnecessary space from the footer

_includes/footer.html

@@ -3,19 +3,14 @@
     a.color-grey, .footer-links {
       color: var(--license-color);
     }
-    a.footer-links img {
+    .footer-links-section {
-      width: 1rem;
+    margin-bottom: 0;
-      display: inline;
+  }
-      vertical-align: middle;
-      margin-bottom: 0;
-      margin-right: 0.2rem;
-    }
   .footer-icons {
     display: inline;
     width: 1rem;
     vertical-align: middle;
     margin-bottom: 0;
-    border-bottom: none;
     }
   </style>
   <span>2023 - Revuo Monero.</br>