sh: Disable seccomp support by default.

This was initially checked in with a stupid default of y, while most
everyone is going to want to have this disabled anyways.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/Kconfig

@@ -496,7 +496,6 @@ config CRASH_DUMP
 config SECCOMP
 	bool "Enable seccomp to safely compute untrusted bytecode"
 	depends on PROC_FS
-	default y
 	help
 	  This kernel feature is useful for number crunching applications
 	  that may need to compute untrusted bytecode during their