[FEATURE] Remove zonal stats plugin

This is now fully exposed via processing, which is the logical
place for this feature to reside.

One less c++ plugin is a good thing!

(marked as feature so we remember to mention this in changelog!)

debian/qgis.install

@@ -8,7 +8,6 @@ usr/lib/qgis/plugins/librasterterrainplugin.so
 usr/lib/qgis/plugins/libspatialqueryplugin.so
 usr/lib/qgis/plugins/libofflineeditingplugin.so
 usr/lib/qgis/plugins/libroadgraphplugin.so
-usr/lib/qgis/plugins/libzonalstatisticsplugin.so
 usr/lib/qgis/plugins/libheatmapplugin.so
 usr/lib/qgis/plugins/libtopolplugin.so
 usr/lib/qgis/plugins/libgeometrycheckerplugin.so

ms-windows/osgeo4w/package.cmd

@@ -394,7 +394,6 @@ tar -C %OSGEO4W_ROOT% -cjf %ARCH%/release/qgis/%PACKAGENAME%/%PACKAGENAME%-%VERS
 	"apps/%PACKAGENAME%/plugins/roadgraphplugin.dll" ^
 	"apps/%PACKAGENAME%/plugins/spatialqueryplugin.dll" ^
 	"apps/%PACKAGENAME%/plugins/topolplugin.dll" ^
-	"apps/%PACKAGENAME%/plugins/zonalstatisticsplugin.dll" ^
 	"apps/%PACKAGENAME%/plugins/geometrycheckerplugin.dll" ^
 	"apps/%PACKAGENAME%/plugins/geometrysnapperplugin.dll" ^
 	"apps/%PACKAGENAME%/qgis_help.exe" ^

ms-windows/plugins.nsh

@@ -22,6 +22,5 @@ WriteRegStr HKEY_CURRENT_USER "Software\QGIS\QGIS3\Plugins" "rasterterrainplugin
 WriteRegStr HKEY_CURRENT_USER "Software\QGIS\QGIS3\Plugins" "roadgraphplugin" "true"
 WriteRegStr HKEY_CURRENT_USER "Software\QGIS\QGIS3\Plugins" "spatialqueryplugin" "true"
 WriteRegStr HKEY_CURRENT_USER "Software\QGIS\QGIS3\Plugins" "topolplugin" "true"
-WriteRegStr HKEY_CURRENT_USER "Software\QGIS\QGIS3\Plugins" "zonalstatisticsplugin" "true"
 
 ###############################  reg2nsis end  #################################

src/plugins/CMakeLists.txt

@@ -13,7 +13,6 @@ ADD_SUBDIRECTORY(coordinate_capture)
 ADD_SUBDIRECTORY(evis)
 ADD_SUBDIRECTORY(spatialquery)
 ADD_SUBDIRECTORY(roadgraph)
-ADD_SUBDIRECTORY(zonal_statistics)
 ADD_SUBDIRECTORY(georeferencer)
 ADD_SUBDIRECTORY(gps_importer)
 ADD_SUBDIRECTORY(topology)