paquet-mq: Eliminiate proto_tree_add_text

Eliminate proto_tree_add_text for Expert Info
Improve PCF Parameters numeric value display

Change-Id: Ibc259ba05d0591d434e7638d91d6943101d45305
Reviewed-on: https://code.wireshark.org/review/5080
Reviewed-by: Robert Grange <robionekenobi@bluewin.ch>
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>