Drop unused new_keypair.cpp.
Drop unused new_keypair.cpp.

* python-gnupg handles keypair generation now.

habibmasuro/OpenBazaar,STRML/OpenBazaar,must-/OpenBazaar,habibmasuro/OpenBazaar,im0rtel/OpenBazaar,bglassy/OpenBazaar,im0rtel/OpenBazaar,kordless/OpenBazaar,matiasbastos/OpenBazaar,bglassy/OpenBazaar,saltduck/OpenBazaar,dionyziz/OpenBazaar,STRML/OpenBazaar,atsuyim/OpenBazaar,tortxof/OpenBazaar,blakejakopovic/OpenBazaar,kordless/OpenBazaar,mirrax/OpenBazaar,im0rtel/OpenBazaar,akhavr/OpenBazaar,mirrax/OpenBazaar,NolanZhao/OpenBazaar,yagoulas/OpenBazaar,bankonme/OpenBazaar,tortxof/OpenBazaar,NolanZhao/OpenBazaar,matiasbastos/OpenBazaar,saltduck/OpenBazaar,bankonme/OpenBazaar,bglassy/OpenBazaar,Renelvon/OpenBazaar,yagoulas/OpenBazaar,rllola/OpenBazaar,rllola/OpenBazaar,Renelvon/OpenBazaar,bankonme/OpenBazaar,kordless/OpenBazaar,freebazaar/FreeBazaar,akhavr/OpenBazaar,saltduck/OpenBazaar,bglassy/OpenBazaar,dionyziz/OpenBazaar,NolanZhao/OpenBazaar,blakejakopovic/OpenBazaar,bankonme/OpenBazaar,blakejakopovic/OpenBazaar,rllola/OpenBazaar,NolanZhao/OpenBazaar,freebazaar/FreeBazaar,yagoulas/OpenBazaar,STRML/OpenBazaar,dionyziz/OpenBazaar,freebazaar/FreeBazaar,yagoulas/OpenBazaar,akhavr/OpenBazaar,matiasbastos/OpenBazaar,habibmasuro/OpenBazaar,tortxof/OpenBazaar,im0rtel/OpenBazaar,STRML/OpenBazaar,habibmasuro/OpenBazaar,dionyziz/OpenBazaar,atsuyim/OpenBazaar,akhavr/OpenBazaar,saltduck/OpenBazaar,freebazaar/FreeBazaar,akhavr/OpenBazaar,kordless/OpenBazaar,atsuyim/OpenBazaar,must-/OpenBazaar,mirrax/OpenBazaar,matiasbastos/OpenBazaar,freebazaar/FreeBazaar,atsuyim/OpenBazaar,must-/OpenBazaar,Renelvon/OpenBazaar,Renelvon/OpenBazaar,mirrax/OpenBazaar,tortxof/OpenBazaar,blakejakopovic/OpenBazaar,rllola/OpenBazaar,dionyziz/OpenBazaar,must-/OpenBazaar