Staging: rtl8192ee: Removed unnecessary return statement.

The following patch removes the checkpatch.pl warning:
WARNING: void function return statements are generally not useful.
Signed-off-by: Heena Sirwani <heenasirwani@gmail.com>
Acked-by: Daniel Baluta <daniel.baluta@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192ee/base.c

@@ -622,8 +622,6 @@ static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
 		return;
 	else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
 		tcb_desc->use_shortpreamble = true;
-
-	return;
 }
 
 static void _rtl_query_shortgi(struct ieee80211_hw *hw,