staging/lustre/libcfs: drop bogus Kconfig default

Commit 4b5b4c72 ("staging/lustre/libcfs: restore LINVRNT") added
"default false" to this Kconfig file. It was obviously meant to use
"default n" here. But we might as well drop this line, as a Kconfig bool
defaults to 'n' anyway.
Signed-off-by: NPaul Bolle <pebolle@tiscali.nl>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/Kconfig

@@ -43,7 +43,6 @@ config LUSTRE_OBD_MAX_IOCTL_BUFFER
 config LUSTRE_DEBUG_EXPENSIVE_CHECK
 	bool "Enable Lustre DEBUG checks"
 	depends on LUSTRE_FS
-	default false
 	help
 	  This option is mainly for debug purpose. It enables Lustre code to do
 	  expensive checks that may have a performance impact.