remove unused attribute
remove unused attribute
evolvedmicrobe/beast-mcmc,danieljue/beast-mcmc,danieljue/beast-mcmc,evolvedmicrobe/beast-mcmc,danieljue/beast-mcmc,danieljue/beast-mcmc,evolvedmicrobe/beast-mcmc,danieljue/beast-mcmc,evolvedmicrobe/beast-mcmc,evolvedmicrobe/beast-mcmc