Migrate GEOS_TopoGet.F90 to get MAPL_VarRead via USE MAPL (fixes #433)

NCIOMod is being moved to base3g/ and re-exported through the MAPL
umbrella module (GEOS-ESM/MAPL#4874). Drop the MAPL2 use statement
now that MAPL_VarRead is available via the existing 'use MAPL'.

Depends on GEOS-ESM/MAPL#4879

Author: tclune

GEOS_Shared/GEOS_TopoGet.F90

@@ -13,7 +13,6 @@ module GEOS_TopoGetMod
 
   use ESMF
   use MAPL
-  use MAPL2, only: MAPL_VarRead  ! TODO: move NCIOMod to mapl_base3g so this comes from MAPL
 
   implicit none
   private