linux: drop MS_REC for readonly remount
linux: drop MS_REC for readonly remount

it has no effect.

Signed-off-by: Giuseppe Scrivano <20002b7b24c75512093a71a58285826d5c504fca@redhat.com>

rhatdan/runc,opencontainers/runc,dqminh/runc,kolyshkin/runc,dqminh/runc,opencontainers/runc,rhatdan/runc,kolyshkin/runc,xiaochenshen/runc,rhatdan/runc,opencontainers/runc,kolyshkin/runc,xiaochenshen/runc,xiaochenshen/runc,rhatdan/runc,kolyshkin/runc,dqminh/runc,opencontainers/runc,estesp/runc,estesp/runc,estesp/runc,dqminh/runc