iwlegacy: remove enum iw_calib and related code

Remove the enum il_calib. It defined one identifier: IL_CALIB_MAX.
Remove the function il4965_calib_free_results. It was doing nothing
because IL_CALIB_MAX is zero. Next, remove calib_results from the
il_priv structure and also remove the associated return
type/struct il_calib_result.

Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlegacy/4965.h

@@ -927,7 +927,6 @@ void il4965_chain_noise_calibration(struct il_priv *il, void *stat_resp);
 void il4965_sensitivity_calibration(struct il_priv *il, void *resp);
 void il4965_init_sensitivity(struct il_priv *il);
 void il4965_reset_run_time_calib(struct il_priv *il);
-void il4965_calib_free_results(struct il_priv *il);
 
 /* Debug */
 #ifdef CONFIG_IWLEGACY_DEBUGFS