Removing a custom keyboard layout

Hello,

I recently used the keyboard layout creator Ukelele to create a custom layout. I need to delete this but I can't seem to remove it fully. By removing it fully, I do not mean removing it simply from the list of active languages, but removing it entirely so it does not even appear on the list of possible input sources.

I have:

Deleted the file from ~/library/keyboard layouts and used EasyFind and Spotlight to delete all copies of the file. Restarted.

Uninstalled Ukelele.

Restarted.

I am still able to select this input and type with it in Safari. I was previously able to type with it in Pages, but now I cannot after removing the files.

Is there any way to fully remove this? I am using Sierra.

Thanks.