Remove apparent copy & paste from Contribution pdf letter function

Remove apparent copy & paste from Contribution pdf letter function

I have done a bit of digging and I can't see any way these url parameters could be passed in
to this form. I also can't think of any reason, other than our old friend copy
& paste, for us to be retrieving activity or case in the url

I kept the isSingle logic but redirected it to focus on a single contribution which
is something we do want