bug: IOException due to non existant source mapping url (#80)

* remove sourcemapping url comment from the JS file

* remove stack trace from the 404 log message to console

Author: fmazmz

src/main/java/org/juv25d/handler/StaticFileHandler.java

@@ -75,7 +75,7 @@ public static HttpResponse handle(HttpRequest request) {
             return new HttpResponse(200, "OK", headers, fileContent);
 
         } catch (IOException e) {
-            logger.log(Level.WARNING, "File not found: " + resourcePath, e);
+            logger.log(Level.WARNING, "File not found: " + resourcePath);
             return createNotFoundResponse(path);
         }
     }