parisc: switch to saner kernel_execve() semantics

ACKed-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

arch/parisc/include/asm/unistd.h

@@ -995,7 +995,6 @@ type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)	\
 #define __ARCH_WANT_SYS_RT_SIGACTION
 #define __ARCH_WANT_SYS_RT_SIGSUSPEND
 #define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND
-#define __ARCH_WANT_KERNEL_EXECVE
 #define __ARCH_WANT_SYS_EXECVE
 
 #endif /* __ASSEMBLY__ */