update NEWS

NEWS.md

@@ -13,3 +13,19 @@ low-resolution version of such files is automatically downloaded when a
 higher-resolution version is not available. Please, refer to
 [ClimaArtifacts](https://github.com/CliMA/ClimaArtifacts) for more information.
 
+### Code cleanup
+#### Remove ClimaCoupler.Diagnostics module - PR [#953](https://github.com/CliMA/ClimaCoupler.jl/pull/953)
+The ClimaCoupler Diagnostics module had become redundant with
+ClimaDiagnostics.jl, a package designed to provide robust
+diagnostics across the CliMA ecosystem.
+Here we remove ClimaCoupler.Diagnostics and instead use
+ClimaDiagnostics.
+
+We're able to retrieve most of the diagnostics
+we want directly from ClimaAtmos and ClimaLand, but also want
+some that come from coupler-computed quantities, such as
+`F_turb_energy`. In this PR we add this coupler quantity
+to our output diagnostics using the ClimaDiagnostics interface.
+
+This PR also removes the AMIP paperplots function, but this
+functionality is replaced by the generalized `make_plots` function.