pdf: fixed definition (fixes test)

pdf/pdf-tests.ts

@@ -1,7 +1,5 @@
 /// <reference path="pdf.d.ts" />
 
-var pdf: PDFPageProxy;
-
 //
 // Fetch the PDF document from the URL using promises
 //

pdf/pdf.d.ts

@@ -27,7 +27,7 @@ interface PDFPromise<T> {
 	isRejected(): boolean;
 	resolve(value: T): void;
 	reject(reason: string): void;
-	then<T>(onResolve: (promise: T) => void, onReject?: (reason: string) => void): PDFPromise<T>;
+	then(onResolve: (promise: T) => void, onReject?: (reason: string) => void): PDFPromise<T>;
 }
 
 interface PDFTreeNode {