If you insist of doing it in vim:

If you want to just delete the octals, and the following pipe, and nothing more: delete the first occurence of 3 0to7 digits between 2 pipes:

:70,77s/|[0-7]\{3}|/|/ 

edit : updated according to the exemple given

If you insist of doing it in vim:

If you want to just delete the octals, and the following pipe, and nothing more: delete the first occurence of 3 0to7 digits between 2 pipes:

:70,77s/|[01]\{3}|/|/ 

edit : updated according to the exemple given