Remove support for priv-noaccess role

A user created with no-access privilege is allowed to login
but can not logout. Any no-access user can create many and
many login sessions and exhaust the bmc without logging out.

No-access role was basically added to support the IPMI usecase,
where a user can be created first and then is assigned a privilege.
This is being reworked at IPMI interface and the dependency on the
no-access privilege is being removed completely. Following two
commits were added to support the priv-noaccess in user-manager
and bmcweb:
[1] https://github.com/openbmc/bmcweb/commit/e9e6d240ab85e515f8d264e39b47a75043b73374
[2] https://github.com/openbmc/phosphor-user-manager/commit/7c6e7cffaf061aabfe5489ef52442e2f7cbd0fb7

This commit removes the no-access role support at bmcweb by
reverting the commit:
[1] https://github.com/openbmc/bmcweb/commit/e9e6d240ab85e515f8d264e39b47a75043b73374

The user-manager change w.r.t this change is at:
[1] https://gerrit.openbmc-project.xyz/c/openbmc/phosphor-user-manager/+/52363



Tested By:
1. Create an LDAP user with priv-noaccess. Verify the login attempt
   fails with accessDenied error
2. Verified the other role users can login

Signed-off-by: Asmitha Karunanithi <asmitk01@in.ibm.com>
Change-Id: I5ac8a58d9146379c9ce3be804d476ea85835bb2f