Remove commented code

We uploaded new android app source code on codecanyon but they rejected with reason “Remove commented code”

Can anyone please tell me what i have to do, which commented code i have to remove? they not clearly mentioned which commented code i have to remove.

Thanks

Had that in the past, somewhere in your code you have parts of your source code commented out. Either while you were testing something or simply forgot to uncomment/remove that chunk of code. Look for it within your source code, if that is the only reason and rest is good, then you should be on the right track.