staging: mt7621-mmc: Remove unused field starttime from msdc_host

The starttime field of msdc_host is never used, remove it.
Signed-off-by: Christian Lütke-Stetzkamp <christian@lkamp.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/mt7621-mmc/mt6575_sd.h

@@ -958,7 +958,6 @@ struct msdc_host {
 	u8                          reserved;
 	u8                          app_cmd;        /* for app command */
 	u32                         app_cmd_arg;
-	u64                         starttime;
 };
 
 static inline unsigned int uffs(unsigned int x)