Revert "Add holding number."

This reverts commit cacd2e1a9b1afcf5bc66843e3717e14ec5f7d8c8.
Modify copy type to have a name (eg, code is d, name is digitised)
Merge branch 'master' into feature/acm-dsc-85
Modify copy type to have a name (eg, code is d, name is digitised)
Merge pull request #242 from nla/feature/acm-dsc-85

Modify copy type to have a name (eg, code is d, name is digitised)
Merge branch 'master' of github.com:nla/amberdb
adding recursive representers finding function