Discard concurrent environments for a model.
The concurrent environments created by getConcurrentEnv will be used by every subsequent call to the concurrent optimizer until the concurrent environments are discarded.
Example usage:
env0 = model.getConcurrentEnv(0)
env1 = model.getConcurrentEnv(1)
env0.setParam('Method', 0)
env1.setParam('Method', 1)
model.optimize()
model.discardConcurrentEnvs()