Fix lint warning.

Author: kevinpschaaf

test/unit/strict-template-policy.html

@@ -195,7 +195,7 @@
         assertThrows(function() {
           class HasNoTemplateThrows extends Polymer.Element {
             static get is() { return 'has-no-template-throws'; }
-          };
+          }
           customElements.define(HasNoTemplateThrows.is, HasNoTemplateThrows); 
           var el = document.createElement('has-no-template-throws');
           document.getElementById('target').appendChild(el);