Remove unused JavaScript variables (no-unused-vars)

Quoting ESLint:

> Variables that are declared and not used anywhere in the code are most
> likely an error due to incomplete refactoring. Such variables take up
> space in the code and can lead to confusion by readers.

This commit removes them. Fixes ESLint no-unused-vars errors using
airbnb/legacy config.

Suggested-by: marc <mharnos@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/js/cheesesteak.js b/js/cheesesteak.js
index ba65e48..905c5f3 100644
--- a/js/cheesesteak.js
+++ b/js/cheesesteak.js
@@ -160,7 +160,7 @@
 
     xhr.open(opts.method, this.url, true);
 
-    function initProgressBar(evt) {
+    function initProgressBar() {
       for (i = 0; i < len; i++) {
         files[i].uploadedSize = 0;
       }