With the CI migration from bamboo to gitlab being finished,
the bamboo test plan setup can be dropped from core.

Resolves: #93994
Releases: master, 10.4, 9.5
Change-Id: I8f3d5beda8b296e268c2da5eddead6a542f5d418
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/68885


Tested-by: core-ci <typo3@b13.com>
Tested-by: Christian Kuhn <lolli@schwarzbu.ch>
Reviewed-by: Christian Kuhn <lolli@schwarzbu.ch>