Removes trd_v21b_mcbm parameter files
trd_v21b_mcbm is removed from the geometry repo cbmroot_geometry!196 (merged). These parameter files have errors and are removed. See Redmine #2659
Edited by Pierre-Alain Loizeau
trd_v21b_mcbm is removed from the geometry repo cbmroot_geometry!196 (merged). These parameter files have errors and are removed. See Redmine #2659