remove bucket air_density update

experiments/ClimaEarth/components/land/climaland_bucket.jl

@@ -274,9 +274,6 @@ function Interfacer.get_field(bucket_sim::BucketSimulation, ::Val{:water})
        ρ_cloud_liq  # kg water / m2
 end
 
-function Interfacer.update_field!(sim::BucketSimulation, ::Val{:air_density}, field)
-    parent(sim.integrator.p.bucket.ρ_sfc) .= parent(field)
-end
 function Interfacer.update_field!(sim::BucketSimulation, ::Val{:liquid_precipitation}, field)
     ρ_liq = (LP.ρ_cloud_liq(sim.model.parameters.earth_param_set))
     parent(sim.integrator.p.drivers.P_liq) .= parent(field ./ ρ_liq)
@@ -304,13 +301,12 @@ Interfacer.reinit!(sim::BucketSimulation) = Interfacer.reinit!(sim.integrator)
 Extend Interfacer.add_coupler_fields! to add the fields required for BucketSimulation.
 
 The fields added are:
-- `:ρ_sfc`
 - `:F_radiative` (for radiation input)
 - `:P_liq` (for precipitation input)
 - `:P_snow` (for precipitation input)
 """
 function Interfacer.add_coupler_fields!(coupler_field_names::Set, ::BucketSimulation)
-    bucket_coupler_fields = [:ρ_sfc, :F_radiative, :P_liq, :P_snow]
+    bucket_coupler_fields = [:F_radiative, :P_liq, :P_snow]
     push!(coupler_field_names, bucket_coupler_fields...)
 end