reverts pwfile change of ownership

Resolves conflict between warning given by `mosquitto_passwd` (that
the `pwfile` must have root ownership) and the actuality (that
`mosquitto` can't read the `pwfile` unless it is owned by 1883.

Signed-off-by: Phill Kelley <[email protected]>

Author: Paraphraser

.templates/mosquitto/docker-entrypoint.sh

@@ -15,7 +15,6 @@ if [ "$user" = '0' -a -d "/mosquitto" ]; then
    chown -Rc mosquitto:mosquitto /mosquitto
 
    # specific requirements for the password file
-   chown -c root:root "$PWFILE"
    chmod -c 600 "$PWFILE"
 
    echo "[IOTstack] end self-repair"