config: disable CONFIG_KTASK by default

hulk inclusion
category: bugfix
bugzilla: 4979
CVE: NA

---------------------------------------

Disable CONFIG_KTASK by default.
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
Reviewed-by: NJian Cheng <cj.chengjian@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

arch/arm64/configs/hulk_defconfig

@@ -34,7 +34,7 @@ CONFIG_HAVE_ARCH_AUDITSYSCALL=y
 CONFIG_AUDITSYSCALL=y
 CONFIG_AUDIT_WATCH=y
 CONFIG_AUDIT_TREE=y
-CONFIG_KTASK=y
+# CONFIG_KTASK is not set
 
 #
 # IRQ subsystem