Problem

Currently, the add-new-minor-version.sh script [1] does not remove the 7.(x-1)/release/master_release.dsl file of the to be released version; however, this is described in the step-by-step guide [2]

Solution

Adjust the script so that it takes care of removing the DSL file

[1] https://github.com/camunda/jenkins-job-dsl-seed-jobs/blob/master/add-new-minor-version.sh
[2] https://github.com/camunda/jenkins-job-dsl-seed-jobs/blob/master/docs/NewCamBPMVersion.md#add-a-new-minor-version-to-the-jobdsl