Fix linter error

Author: TimvdLippe

test/unit/property-effects-elements.html

@@ -69,9 +69,11 @@
       </div>
       <span id="boundWithDash">{{objectWithDash.binding-with-dash}}</span>
       <script id="scriptWithBinding">
+        /* eslint-disable no-unused-vars */
         function foo() {
           return "We have a {{binding}} here";
         }
+        /* eslint-enable no-unused-vars */
       </script>
       <style id="styleWithBinding">
         :host {