Remove the deprecated verify-tempest-config CLI

Tempest CLI verify-tempest-config was deprecated
4 years ago.

With assumption of all the users of this CLI have
moved to new CLI 'tempest verify_config', it is
time to remove the old deprecated CLI now.
'verify_tempest_config' should be now used as
'tempest verify_config'

The following commit gives the idea of deprecation
message:-
https://opendev.org/openstack/tempest/commit/e45aa842bc823b56560af247eb5e26b1fd686151

Signed-off by: Soniya Vyas<svyas@redhat.com>
Change-Id: Ic3dbd6f5e854e017a5bec4b1a625730ab68e767d
3 files changed