MAINTAINERS: remove "PKUNITY SOC DRIVERS" entry

There no PkUnity drivers left, so remove the MAINTAINERS entry.

Signed-off-by: Mike Rapoport <[email protected]>
Acked-by: Arnd Bergmann <[email protected]>
Acked-by: Guenter Roeck <[email protected]>

Author: rppt

MAINTAINERS

@@ -13580,12 +13580,6 @@ F:	drivers/block/pktcdvd.c
 F:	include/linux/pktcdvd.h
 F:	include/uapi/linux/pktcdvd.h
 
-PKUNITY SOC DRIVERS
-M:	Guan Xuetao <[email protected]>
-S:	Maintained
-W:	http://mprc.pku.edu.cn/~guanxuetao/linux
-T:	git git://github.com/gxt/linux.git
-
 PLANTOWER PMS7003 AIR POLLUTION SENSOR DRIVER
 M:	Tomasz Duszynski <[email protected]>
 S:	Maintained