Try it. I needed to say nahthing.
It's in the mesh edit mode 'W' menu
Improved error handling when selected paths contain not enough edges to perform any unbevel operation.
Now works with Blender 2.8 Beta. The default now removes the supporting edge. And due to Blender 2.8's menu visual update, the button would appear above the name of the menu, THAT IS NOT OKAY. So I moved it to the bottom of the menu instead.
Sorry for leaving this not-updated for so long. I was waiting for Blender 2.8 to give us the release candidate ALREADY, but seems like it won't happen soon.
If you plan to use this with Blender 2.7 please download version 0.1.