[OPENENGSB-799] remove zip/tar artifacts from helper plugin
[OPENENGSB-799] remove zip/tar artifacts from helper plugin

This is not required because they are automatically part of the release
cycle using the latest assembly plugin. This helps to simplify the
required configuration

Signed-off-by: Andreas Pieber <57efbcbb22ec0bd89955a40df26b44c340d3e38d@gmail.com>

openengsb/openengsb,openengsb/openengsb,openengsb/openengsb,openengsb/openengsb,openengsb/openengsb,openengsb/openengsb