Revert "Merge branch 'ph/333351/fixSuggestionsNewLines' into 'master'"

This reverts merge request !68532

app/assets/javascripts/lib/utils/text_markdown.js

@@ -232,7 +232,7 @@ export function insertMarkdownText({
         .join('\n');
     }
   } else if (tag.indexOf(textPlaceholder) > -1) {
-    textToInsert = tag.replace(textPlaceholder, () => selected);
+    textToInsert = tag.replace(textPlaceholder, () => selected.replace(/\\n/g, '\n'));
   } else {
     textToInsert = String(startChar) + tag + selected + (wrap ? tag : '');
   }

spec/frontend/lib/utils/text_markdown_spec.js

@@ -70,25 +70,6 @@ describe('init markdown', () => {
         expect(textArea.value).toContain('# Does not parse the `$` currently.');
       });
 
-      it('inserts a new line correctly', () => {
-        const initialValue = '';
-
-        textArea.value = initialValue;
-        textArea.selectionStart = 0;
-        textArea.selectionEnd = 0;
-
-        insertMarkdownText({
-          textArea,
-          text: textArea.value,
-          tag: '```suggestion:-0+0\n{text}\n```',
-          blockTag: true,
-          selected: '# Does not parse the \\n currently.',
-          wrap: false,
-        });
-
-        expect(textArea.value).toContain('# Does not parse the \\n currently.');
-      });
-
       it('inserts the tag on a new line if the current one is not empty', () => {
         const initialValue = 'some text';