Drone: update Lint results to reflect reduced error/warning count [skip ci]

scripts/lint/lint-results.txt

@@ -1,2 +1,2 @@
 DO NOT TOUCH; GENERATED BY DRONE
-      <span class="mdl-layout-title">Lint Report: 21 errors and 678 warnings</span>
+      <span class="mdl-layout-title">Lint Report: 20 errors and 678 warnings</span>