Revert "Allow suppressMessage on imxReportProgress output"
Revert "Allow suppressMessage on imxReportProgress output"

Works in a terminal, but doesn't work in RStudio 1.0.143

jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx,jpritikin/OpenMx