Revert "Add QNX' QNET protocol"

This reverts commit 72b91a56f86e3bbab700900366f81dc8c353b91d.

value_string_ext tables ***MUST*** be sorted numerically, otherwise the code prints warnings such as the ones in

    http://buildbot.wireshark.org/trunk/builders/Ubuntu%2014.04%20x64/builds/1419/steps/test.sh/logs/stdio

Fix this and resubmit.

Change-Id: I448025bb7b19a607e992831202ed31d243ce70d8
Reviewed-on: https://code.wireshark.org/review/5530
Reviewed-by: Guy Harris <guy@alum.mit.edu>