cubicweb #2919295 deprecate zmq-pickle [validation pending]

This pickle over zmq option have no real benefit over what pyro can already do. We are moving in the direction to drop such kind of pickled RPC.

prioritynormal
typeenhancement
done in3.19.3
load0.500
load left0.000
closed by#57e2cffa6329 Add warning messages when enabling remote pickle-based repository access
patchAdd warning messages when enabling remote pickle-based repository access [applied]