Near global quarter degree validation experiment is broken

[glwagner]

At least, this is not the current syntax for discrete diffusion function:

Oceananigans.jl/validation/near_global_lat_lon/near_global_quarter_degree.jl

Line 131 in 2234f02

@inline νhb(i, j, k, grid, lx, ly, lz) = (1 / (1 / Δx(i, j, k, grid, lx, ly, lz)^2 + 1 / Δy(i, j, k, grid, lx, ly, lz)^2 ))^2 / 5days

There are also some formatting irregularities here:

Oceananigans.jl/src/TurbulenceClosures/discrete_diffusion_function.jl

Lines 57 to 67 in 2234f02

	@inline function getdiffusivity(dd::DiscreteDiffusionFunction{LX, LY, LZ},
	i, j, k, grid, location, clock, fields) where {LX, LY, LZ}
	from = (LX(), LY(), LZ())
	return ℑxyz(i, j, k, grid, from, location, dd.func, clock, fields, dd.parameters)
	end
	@inline function getdiffusivity(dd::UnparameterizedDDF{LX, LY, LZ},
	i, j, k, grid, location, clock, fields) where {LX, LY, LZ}
	from = (LX(), LY(), LZ())
	return ℑxyz(i, j, k, grid, from, location, dd.func, clock, fields)
	end

[glwagner]

Also if we are following syntax for Forcing and BoundaryConditions, we may want to use the ordering i, j, k, grid, clock, fields, location, which preserves the logic:

1. position (i, j, k, grid)
2. time (clock, iteration, time)
3. fields
4. "everything else"

[glwagner]

I think we should just remove these validation experiments since we have ClimaOcean now...