Deprecate makesourcedb (RAP-481)

DP3 accepts BBS-compatible skymodel files as input. A call of makesourcedb is not needed anymore. The corresponding ticket is RAP-481

scripts/merge_skymodels.py

@@ -35,9 +35,5 @@ if __name__ == '__main__':
     format_stream = logging.Formatter("%(asctime)s\033[1m %(levelname)s:\033[0m %(message)s","%Y-%m-%d %H:%M:%S")
     format_file   = logging.Formatter("%(asctime)s %(levelname)s: %(message)s","%Y-%m-%d %H:%M:%S")
     logging.root.setLevel(logging.INFO)
-
-    log      = logging.StreamHandler()
-    log.setFormatter(format_stream)
-    logging.root.addHandler(log)
-    
+ 
     main(skymodel = args.skymodel, model2append = args.model2append, outmodel = args.outmodel)