staging:rtl8192u: Remove unused UP2AC - Style

The macro UP2AC is commented out of the header file so the macro and its
associated comment are removed.

This is a coding style change which should have no impact on runtime
code execution.
Signed-off-by: NJohn Whitmore <johnfwhitmore@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtl8192u/ieee80211/rtl819x_Qos.h

@@ -77,9 +77,6 @@ struct octet_string {
 	u16             length;
 };
 
-//Added by joseph
-//UP Mapping to AC, using in MgntQuery_SequenceNumber() and maybe for DSCP
-//#define UP2AC(up)			((up<3)?((up==0)?1:0):(up>>1))
 #define IsACValid(ac)			((ac <= 7) ? true : false)
 
 #endif // #ifndef __INC_QOS_TYPE_H