apparmor: remove unused PROF_* macros

The last usage of PROF_{ADD,REPLACE} were removed by commit 18e99f19
("apparmor: provide finer control over policy management"). So remove
these two unused macros.

Signed-off-by: GONG, Ruiqi <gongruiqi1@huawei.com>
Signed-off-by: John Johansen <john.johansen@canonical.com>