[PRQ#48173] Deletion Request for python2-prompt_toolkit1

MarsSeed [1] filed a deletion request for python2-prompt_toolkit1 [2]: ipython2 is broken, unused, unmaintained. Safe to delete this as well. Ref: deletion request PRQ#48171 for ipython2. [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/python2-prompt_toolkit1/