chore: remove unwanted class in script

Author: rajesh-jonnalagadda

templates/repo/diff/blob_excerpt.tmpl

@@ -147,7 +147,7 @@
 			</td>
 		</tr>
 		<button class="pull-request-diff-comments hidden"></button>
-		<script class="pull-request-diff-comments">
+		<script>
 			var $buttons = document.querySelector('button.pull-request-diff-comments');
 			if ($buttons) {
 				$buttons.click();