Release v54.1.0

Delete old flow cell before adding re-demultiplexed flow cell (#2593)(minor))

Changed

• Removed Delete_flow_cell_API
• Removed the cg demultiplex delete-flow-cell CLI command
• No longer checks for active cases before removing stuff (Does one not always want to restart with new data?)

Before post-processing:

• The sequencing_metrics are removed from status_db
• The sequencing files (FASTQ, SPRING, SPRING-metadata) are removed from housekeeper and disk