removed extra line from MCMC_samplers.R
removed extra line from MCMC_samplers.R

NLMichaud/nimble,NLMichaud/nimble,nxdao2000/nimble,nxdao2000/nimble,nxdao2000/nimble,NLMichaud/nimble,nimble-dev/nimble,nimble-dev/nimble,nxdao2000/nimble,nimble-dev/nimble,nimble-dev/nimble,nimble-dev/nimble,NLMichaud/nimble