Removing ptp.v2.an.fcs as this erroneously refers to the Ethernet FCS which is properly handled by the Ethernet dissector.

Bug: 10611
Change-Id: I735085edf5c0d2a66c30c940c4b780a2ce8db6d4
Reviewed-on: https://code.wireshark.org/review/5964
Reviewed-by: Michael Mann <mmann78@netscape.net>
Petri-Dish: Michael Mann <mmann78@netscape.net>
Reviewed-by: Guy Harris <guy@alum.mit.edu>
(cherry picked from commit a5a25658ed45bc44314dbd497ffad5e8fb9a915c)
Reviewed-on: https://code.wireshark.org/review/5966