passwd-util: Drop unnecessary #include
passwd-util: Drop unnecessary #include

This was breaking the

    make -C packaging -f Makefile.dist-packaging dist-snapshot-without-compose-tooling

build.

tmp-user/rpm-ostree,mdshuai/rpm-ostree,giuseppe/rpm-ostree,tmp-user/rpm-ostree,mdshuai/rpm-ostree,tmp-user/rpm-ostree,mdshuai/rpm-ostree,tmp-user/rpm-ostree,giuseppe/rpm-ostree,giuseppe/rpm-ostree,mdshuai/rpm-ostree,giuseppe/rpm-ostree