Remove duplicate niter declaration from grid_constants_cbl.F90

Removed the constant definition for niter.

Author: ccarouge

src/coupled/JAC/params/cable/grid_constants_cbl.F90

@@ -48,7 +48,6 @@ MODULE grid_constants_mod_cbl
 INTEGER, PARAMETER :: lakes_cable  = 16! SoilType Index (soilparm_cable.nml JAC)
 
 INTEGER, PARAMETER :: mf = 2          ! # leaves (sunlit, shaded)
-INTEGER, PARAMETER :: niter = 4       ! number of iterations for za/L
 
 ! Strictly NOT a constant. # of active tiles, length of CABLE working vectors
 INTEGER :: mp