remove obsolete base image definition #2502

[sven-dmlr]

• closes pds-solutions: remove redundancy in base image definition #2502

[Jeeppler]

This change is not sufficient. It will most likely break the local start of PDS-Solutions. The local development workflow and local system testing is, to start the PDS solution via wrapper script 01-start… or 05-start…. Both scripts take the base image information from: https://github.com/mercedes-benz/sechub/blob/develop/sechub-pds-solutions/shared/environment/env-base-image. And create a .env and .env-single with all the default values. Please ensure, that each 01-start… und 05-start… scripts contain the line setup_environment_file ".env" "env" "$ENVIRONMENT_FILES_FOLDER/env-base-image" (source: https://github.com/mercedes-benz/sechub/blob/develop/sechub-pds-solutions/gosec)/01-start-single-docker-compose.sh#L12.