Is possible to remove layers/headers from pcap?

edit

Thanks for answer Anders.

The original packet has:

Frame X
Ethernet II
IPv4
SCTP
MTP2
MTP3
SCCP
TCAP
MAP

When I try Export PDUs to file and select "OSI layer 3" changes to

Frame X
EXPORTED_PDU
MTP2
MTP3
SCCP
TCAP
MAP

And I want to visualize in the following way, if possible only showing this layers?

Frame X
MTP3
SCCP
TCAP
MAP

The thing is I have several hex dump that I need to convert with Text2Pcap, but the data begins in MTP3 layer and when I copy the bytes from Ethernet to MTP2 and then add the MTP3 bytes, when I convert to pcap the first packet looks correct but the others appear as RETRANSMISSION ansdI think this is because has the same values for previous layer (SCTP, MTP2, etc)

Using text2pcap I think you can use a user dlt and then tie his user dlt to mtp3 in Wiresharks GUI.

I tried user DLT in Export PDU to file option and in filter I put MTP3 but after that everything disappears.

You can use tex2pcap to covert your HEX dump to an User dlt with mtp3 as payload then define that dlt in wireshark to be decoded as mtp3. No Need for exported pdu. But if you have a trace with the full stack you can shave layers off with exported pdu.

Thanks Anders for your suggestions.