[php-maint] Bug#871658: empty directories not removed upon purge

[積丹尼 Dan Jacobson]

Package: php7.0
Version: 7.0.22-2
Severity: minor

dpkg: warning: while removing php7.0-mysql, directory '/etc/php/7.0/mods-available' not empty so not removed
dpkg: warning: while removing libapache2-mod-php7.0, directory '/etc/php/7.0/apache2/conf.d' not empty so not removed
dpkg: warning: while removing php7.0-cli, directory '/etc/php/7.0/cli/conf.d' not empty so not removed
$ find /etc/php/7.0/
/etc/php/7.0/
/etc/php/7.0/mods-available
/etc/php/7.0/apache2
/etc/php/7.0/apache2/conf.d
/etc/php/7.0/cli
/etc/php/7.0/cli/conf.d
/etc/php/7.0/fpm
/etc/php/7.0/fpm/conf.d
All just empty directories.