Revert "Introduce custom Jekyll tags for better glossary integration" (#6160)

This reverts commit 46d9cbe5ae.

css/custom-jekyll/tags.css

@@ -1,56 +0,0 @@
-.no-underline {
-  text-decoration: none !important;
-}
-
-.hide {
-  display: none !important;
-}
-
-/* Tooltip container */
-.glossary-tooltip {
-    position: relative;
-    display: inline-block;
-    border-bottom: 1px dotted black; /* If you want dots under the hoverable text */
-    color: black;
-    text-decoration: none !important;
-}
-
-/* Tooltip text */
-.glossary-tooltip .tooltip-text {
-    visibility: hidden;
-    width: 300px;
-    background-color: #555;
-    color: #fff;
-    text-align: center;
-    padding: 5px 8px;
-    border-radius: 6px;
-
-    /* Position the tooltip text */
-    position: absolute;
-    z-index: 1;
-    bottom: 125%;
-    left: 50%;
-    margin-left: -150px;
-
-    /* Fade in tooltip */
-    opacity: 0;
-    transition: opacity 0.3s;
-}
-
-/* Tooltip arrow */
-.glossary-tooltip .tooltip-text::after {
-    content: "";
-    position: absolute;
-    top: 100%;
-    left: 50%;
-    margin-left: -5px;
-    border-width: 5px;
-    border-style: solid;
-    border-color: #555 transparent transparent transparent;
-}
-
-/* Show the tooltip text when you mouse over the tooltip container */
-.glossary-tooltip:hover .tooltip-text {
-    visibility: visible;
-    opacity: 1;
-}

css/glossary.css

@@ -2,6 +2,14 @@
   display: inline;
 }
 
+.no-underline {
+  text-decoration: none !important;
+}
+
+.hide {
+  display: none !important;
+}
+
 .permalink {
   background-image: url(../images/link.png);
   background-repeat: no-repeat;