remove time scaling for msd slope

Author: ilia-nikiforov-umn

test_driver/npt.lammps

@@ -83,7 +83,7 @@ thermo 1000
 
 # Perform a short run and decide whether or not to quit
 run 5000
-if "${msd_slope} > $(v_msd_threshold*(v__u_distance^2)/v__u_time)" then "write_dump all atom ${melted_crystal_output}" &
+if "${msd_slope} > $(v_msd_threshold*(v__u_distance^2))" then "write_dump all atom ${melted_crystal_output}" &
                                                                         "print 'Crystal melted or vaporized'" &
                                                                         "quit"
 unfix msd_vector