wireproto: remove support for local results in @batchable (API) @peer.batchable decorated generator functions have two forms: yield value, None and yield args, future yield value These forms have been present since the decorator was introduced. There are currently no in-repo consumers of the first form. So this commit removes support for it. Note that remoteiterbatcher.submit() asserts the 2nd form. And b6e71f8af5b8 removed the last user of remotebatcher, forcing everyone to remoteiterbatcher. So anything relying on this in the wild would have been broken since b6e71f8af5b8. .. api:: @peer.batchable can no longer emit local values Differential Revision: https://phab.mercurial-scm.org/D318

== Local
Ready.
Un and Deux
Eins und Zwei
One and Two
Eins und Zwei
Hello, John Smith
Ready.
Uno und Due

== Remote
Ready.
REQ: foo?one=Vo&two=Efvy
  -> Vo!boe!Efvy
Un and Deux
REQ: bar?b=Fjot&a=[xfj
  -> Fjot!voe![xfj
Eins und Zwei
REQ: batch?cmds=foo:one=Pof,two=Uxp;bar:b=Fjot,a=[xfj
  -> Pof!boe!Uxp;Fjot!voe![xfj
REQ: greet?name=Kpio!Tnjui
  -> Ifmmp-!Kpio!Tnjui
REQ: batch?cmds=bar:b=Vop,a=Evf
  -> Vop!voe!Evf
One and Two
Eins und Zwei
Hello, John Smith
Ready.
Uno und Due