Cant find custom phrase in my template
 

A while back I didnt want users to edit their username and password from UserCP (edit email & password). I found the custom phrase I created that tells the user they cant edit their username, but I have no idea where/what is calling it. I named it disable_password_change

So the 2 questions I have are:

Where in my template should I find the phrase I created? (again the custom phrase appears when you go to user cp, then click on "edit email & password")

What should I replace it with so that its default (out of the box)? I want users to be able to edit their username and password just like you can by default install.

Thanks!