Update tslint, fix lint

src/addons/search/search.ts

@@ -17,7 +17,7 @@ export function findNext(terminal: any, term: string): boolean {
     terminal.searchHelper = new SearchHelper(terminal);
   }
   return (<SearchHelper>terminal.searchHelper).findNext(term);
-};
+}
 
 /**
  * Find the previous instance of the term, then scroll to and select it. If it
@@ -30,7 +30,7 @@ export function findPrevious(terminal: any, term: string): boolean {
     terminal.searchHelper = new SearchHelper(terminal);
   }
   return (<SearchHelper>terminal.searchHelper).findPrevious(term);
-};
+}
 
 export function apply(terminalConstructor: any): void {
   terminalConstructor.prototype.findNext = function(term: any): boolean {