iwlwifi: remove EXPORT_SYMBOL for static symbol

It does not make sense to apply EXPORT_SYMBOL to a static symbol.  Fixes
this build error:

drivers/net/wireless/iwlwifi/iwl3945-base.c:1697: error: __ksymtab_iwl3945_rx_queue_reset causes a section type conflict
Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/iwlwifi/iwl3945-base.c

@@ -1744,7 +1744,6 @@ static void iwl3945_rx_queue_free(struct iwl_priv *priv, struct iwl_rx_queue *rx
 	rxq->bd = NULL;
 	rxq->rb_stts  = NULL;
 }
-EXPORT_SYMBOL(iwl3945_rx_queue_free);
 
 
 /* Convert linear signal-to-noise ratio into dB */