iwlwifi: mvm: remove session protection upon station removal

When the station is removed we need to remove the session protection
that may be still running.
Note that we need also to remove the session protection upon unassoc in
case the station is kept in the AUTH state.

Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20211204130722.483977310ca2.If7eba02594f20dabd22d758e1c917fbca54b2ddd@changeid


Signed-off-by: Luca Coelho <luciano.coelho@intel.com>