remove obsolete models

trainbenchmark/models/railway-batch-1-Region.csv

trainbenchmark/models/railway-batch-1-Route.csv

trainbenchmark/models/railway-batch-1-Segment.csv

trainbenchmark/models/railway-batch-1-Semaphore.csv

trainbenchmark/models/railway-batch-1-Sensor.csv

trainbenchmark/models/railway-batch-1-Switch.csv

trainbenchmark/models/railway-batch-1-SwitchPosition.csv

trainbenchmark/models/railway-batch-1-ag.json.scm

trainbenchmark/models/railway-batch-1-connectsTo.csv

trainbenchmark/models/railway-batch-1-entry.csv

trainbenchmark/models/railway-batch-1-exit.csv

trainbenchmark/models/railway-batch-1-follows.csv

trainbenchmark/models/railway-batch-1-inferred.ttl

trainbenchmark/models/railway-batch-1-metamodel.ttl

trainbenchmark/models/railway-batch-1-monitoredBy.csv

trainbenchmark/models/railway-batch-1-mysql.sql

trainbenchmark/models/railway-batch-1-raw.sql

trainbenchmark/models/railway-batch-1-requires.csv

trainbenchmark/models/railway-batch-1-sqlite.sql

trainbenchmark/models/railway-batch-1-target.csv