arch: remove score port

The Sunplus S+core architecture was added in 2009 by Chen Liqin,
who has been co-maintaining it with Lennox Wu <[email protected]>
since then, but after they both left the company, nobody else has shown
any interest in the port and it has seen almost no activity other than
tree-wide changes.

The gcc port was removed a few years ago due to the inactivity.

While the sunplus website still advertises products with unspecified
RISC cores that might be S+core based, it's very clear that the Linux
port is completely abandoned at this point.

This removes all files related to the architecture.

Acked-by: Lennox Wu <[email protected]>
Link: http://www.sunplus.com/
Signed-off-by: Arnd Bergmann <[email protected]>

Author: arndb

MAINTAINERS

@@ -12235,13 +12235,6 @@ F:	include/linux/sched.h
 F:	include/uapi/linux/sched.h
 F:	include/linux/wait.h
 
-SCORE ARCHITECTURE
-M:	Chen Liqin <[email protected]>
-M:	Lennox Wu <[email protected]>
-W:	http://www.sunplus.com
-S:	Supported
-F:	arch/score/
-
 SCR24X CHIP CARD INTERFACE DRIVER
 M:	Lubomir Rintel <[email protected]>
 S:	Supported