Delete split_nt.csh
Delete split_nt.csh

removed split_nt which is only used for SNAP db construction. Will instead use gt splitfasta which is already a dependency of SURPI.
yesimon/surpi,yesimon/surpi,chiulab/surpi,yesimon/surpi,chiulab/surpi,chiulab/surpi,yesimon/surpi,chiulab/surpi