Remove reference in template

Author: felicitymay

.github/ISSUE_TEMPLATE/ql---general.md

@@ -9,6 +9,5 @@ assignees: ''
 
 **Description of the issue**
 
-<!-- Please explain briefly what is the problem.
-If it is about an LGTM project, please include its URL.-->
+<!-- Please explain briefly what is the problem.-->