score: unset __ARCH_WANT_IPC_PARSE_VERSION

This really should not be needed. The change for not changing
the IPC code for every new architecture just went into 2.6.31,
so we can skip it now.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/score/include/asm/unistd.h

@@ -2,7 +2,6 @@
 #define _ASM_SCORE_UNISTD_H
 
 #define __ARCH_HAVE_MMU
-#define __ARCH_WANT_IPC_PARSE_VERSION
 
 #include <asm-generic/unistd.h>