mpeg-pes: don't modify source and destination address colums

the mpeg-pes dissector replaced source or destination address with
decoding timestamp, presentation timestamp or pack data rate
these values don't belong into address columns and erase the IP
addresses when mpeg-pes is transmitted over IP

the timestamps etc can be displayed in a user-defined column if required

this patch is part of
Bug: 10505

Change-Id: I1bf561648f848eb18818862edd138724abfc8e88
Reviewed-on: https://code.wireshark.org/review/4472
Reviewed-by: Martin Kaiser <wireshark@kaiser.cx>
Tested-by: Martin Kaiser <wireshark@kaiser.cx>