DEV: Removing unused lines of code.

The code had no effect on how the markdown-it is being configured.

app/assets/javascripts/pretty-text/addon/engines/discourse-markdown-it.js

@@ -374,7 +374,7 @@ export function setup(opts, siteSettings, state) {
   opts.engine = window.markdownit({
     discourse: opts.discourse,
     html: true,
-    breaks: opts.discourse.features.newline,
+    breaks: !siteSettings.traditional_markdown_linebreaks,
     xhtmlOut: false,
     linkify: siteSettings.enable_markdown_linkify,
     typographer: siteSettings.enable_markdown_typographer,

app/assets/javascripts/pretty-text/addon/pretty-text.js

@@ -33,7 +33,6 @@ export function buildOptions(state) {
     emojiUnicodeReplacer,
     lookupUploadUrls,
     previewing,
-    linkify,
     censoredRegexp,
     disableEmojis,
     customEmojiTranslation,
@@ -41,14 +40,7 @@ export function buildOptions(state) {
     watchedWordsLink,
   } = state;
 
-  // These are markdown-it rules defined in https://github.com/markdown-it/markdown-it#manage-rules.
-  let features = {
-    "bold-italics": true,
-    "auto-link": true,
-    html: true,
-    linkify: linkify !== false,
-    newline: !siteSettings.traditional_markdown_linebreaks,
-  };
+  let features = {};
 
   if (state.features) {
     features = deepMerge(features, state.features);