Some can be made static, others are unused generated_co_wrappers.

Signed-off-by: Alberto Faria <afaria@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Message-Id: <20220705161527.1054072-19-afaria@redhat.com>
Signed-off-by: Hanna Reitz <hreitz@redhat.com>