Revert "PLT-395: Add syntax highlighting to Markdown code blocks"

web/react/utils/utils.jsx

@@ -408,11 +408,6 @@ export function toTitleCase(str) {
 }
 
 export function applyTheme(theme) {
-    if (!theme.codeTheme) {
-        theme.codeTheme = Constants.DEFAULT_CODE_THEME;
-    }
-    updateCodeTheme(theme.codeTheme);
-
     if (theme.sidebarBg) {
         changeCss('.sidebar--left, .settings-modal .settings-table .settings-links, .sidebar--menu', 'background:' + theme.sidebarBg, 1);
     }
@@ -599,27 +594,6 @@ export function rgb2hex(rgbIn) {
     return '#' + hex(rgb[1]) + hex(rgb[2]) + hex(rgb[3]);
 }
 
-export function updateCodeTheme(theme) {
-    const path = '/static/css/highlight/' + theme + '.css';
-    const $link = $('link.code_theme');
-    if (path !== $link.attr('href')) {
-        changeCss('code.hljs', 'visibility: hidden');
-        var xmlHTTP = new XMLHttpRequest();
-        xmlHTTP.open('GET', path, true);
-        xmlHTTP.onload = function onLoad() {
-            $link.attr('href', path);
-            if (isBrowserFirefox()) {
-                $link.one('load', () => {
-                    changeCss('code.hljs', 'visibility: visible');
-                });
-            } else {
-                changeCss('code.hljs', 'visibility: visible');
-            }
-        };
-        xmlHTTP.send();
-    }
-}
-
 export function placeCaretAtEnd(el) {
     el.focus();
     if (typeof window.getSelection != 'undefined' && typeof document.createRange != 'undefined') {