removed debugger

lib/single-file/single-file-browser.js

@@ -83,7 +83,6 @@ this.SingleFile = this.SingleFile || (() => {
 				contentType = contentType.match(/^([^;]*)/)[0];
 			}
 			if (contentType.indexOf("/") <= 0) {
-				debugger
 				contentType = null;
 			}
 			if (options && options.asDataURI) {