config: Disable CONFIG_EULER_FS by default

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I7BAJ0



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

EulerFS was introduced as a technical preview feature in the 21.09
innovation version. Considering the current discontinuation of Intel
Optane hardware and immature ecosystem, it has been decided to turn it
off in the 22.03 LTS version. It will continue to evolve as an innovative
feature in future innovation versions.

Signed-off-by: Wei Li <liwei391@huawei.com>