ignore lgtm unused-local-variable warning in dashboard js files

dist/js/pages/dashboard.js

@@ -265,3 +265,5 @@ $(function () {
     options: salesGraphChartOptions
   })
 })
+
+// lgtm [js/unused-local-variable]

dist/js/pages/dashboard2.js

@@ -266,3 +266,5 @@ $(function () {
   //   ]
   // })
 })
+
+// lgtm [js/unused-local-variable]

dist/js/pages/dashboard3.js

@@ -143,3 +143,5 @@ $(function () {
     }
   })
 })
+
+// lgtm [js/unused-local-variable]