iwlagn: clean up TX aggregation code

Since the driver split, there's no need for
function pointers any more for aggregation
queue setup and teardown as all devices now
share the same code. Simplify this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
7 files changed