Merge branch 'init_atmosphere/no_hx_advCells_output' into develop (PR #…

…992)

This merge removes the hx and advCells fields from the input and output
streams in the init_atmosphere core. These two fields are not needed in
the MPAS-Atmosphere model initial conditions, and furthermore they are each
only used in a single processing stage within the init_atmosphere core.

* init_atmosphere/no_hx_advCells_output:
  Remove 'advCells' from init_atmosphere input and output streams
  Remove 'hx' field from init_atmosphere input and output streams

src/core_init_atmosphere/Registry.xml

@@ -410,14 +410,12 @@
                         <var name="ol3" packages="vertical_stage_in;met_stage_in"/>
                         <var name="ol4" packages="vertical_stage_in;met_stage_in"/>
                         <var name="deriv_two" packages="gwd_stage_in;vertical_stage_in;met_stage_in"/>
-                        <var name="advCells" packages="gwd_stage_in;vertical_stage_in;met_stage_in"/>
                         <var name="defc_a" packages="gwd_stage_in;vertical_stage_in;met_stage_in"/>
                         <var name="defc_b" packages="gwd_stage_in;vertical_stage_in;met_stage_in"/>
                         <var name="coeffs_reconstruct" packages="gwd_stage_in;vertical_stage_in;met_stage_in"/>
                         <var name="cf1" packages="met_stage_in"/>
                         <var name="cf2" packages="met_stage_in"/>
                         <var name="cf3" packages="met_stage_in"/>
-                        <var name="hx" packages="met_stage_in"/>
                         <var name="zgrid" packages="met_stage_in"/>
                         <var name="rdzw" packages="met_stage_in"/>
                         <var name="dzu" packages="met_stage_in"/>
@@ -508,14 +506,12 @@
                         <var name="ol3" packages="gwd_stage_out;vertical_stage_out;met_stage_out"/>
                         <var name="ol4" packages="gwd_stage_out;vertical_stage_out;met_stage_out"/>
                         <var name="deriv_two"/>
-                        <var name="advCells"/>
                         <var name="defc_a"/>
                         <var name="defc_b"/>
                         <var name="coeffs_reconstruct"/>
                         <var name="cf1" packages="vertical_stage_out;met_stage_out"/>
                         <var name="cf2" packages="vertical_stage_out;met_stage_out"/>
                         <var name="cf3" packages="vertical_stage_out;met_stage_out"/>
-                        <var name="hx" packages="vertical_stage_out;met_stage_out"/>
                         <var name="zgrid" packages="vertical_stage_out;met_stage_out"/>
                         <var name="rdzw" packages="vertical_stage_out;met_stage_out"/>
                         <var name="dzu" packages="vertical_stage_out;met_stage_out"/>