Use the LDIF delete subcommand to delete a specific attribute value
from an attribute.
Run the ldapmodify tool from the command line.
Specify the modification using changetype:modify.
Specify the attribute pair that you want to delete using
delete.
The following sample assumes you have multiple values of cn in an
entry, such as cn: Sally Tree, cn: Sally Tea
Tree. This sample keeps cn:Sally Tree and deletes the
cn: Sally Tea Tree.