Unable to Turn off Battery Percentage Indicator A few years ago when I had my iPhone 3GS, and wanted to see the battery displayed as a percentage (before this was implemented as a feature of iOS).  I achieved this via jailbreak.  Now my issue is this:  I can't turn it off.  I am several versions of phone and iOS beyond where I was when I implemented the jailbreak, unfortunately I (incorrectly) figured that when I migrated hardware this issue would resolve itself.

I am wondering is there somewhere I can go in the filesystem and remove a file or flag or something to resolve this?

The accepted answer to this question goes into more detail regarding this jailbreak hack.
I'm guessing that if you're "several versions of phone and iOS beyond where" you were when you did this, then you are likely not jailbroken anymore? Because they introduced the percentage as an option and is configurable in 
Settings >> General >> Usage >> Battery Percentage (last option for me).

If you're still jailbroken and you have this option off already, then I'm sorry, I can't help you there. Good luck