[flows][xs]: fix script to make the schema correct for both resources.

- worldwide resource had extra columns that is not needed, eg, country, province, lat, lon.

process.py

@@ -58,7 +58,7 @@ Flow(
       ),
       delete_fields(['Case']),
       update_resource('time_series_19-covid-Deaths', name='time-series-19-covid-combined', path='data/time-series-19-covid-combined.csv'),
-      update_schema('worldwide-aggregated', fields=[
+      update_schema('time-series-19-covid-combined', fields=[
         {
         "format": "%Y-%m-%d",
         "name": "Date",
@@ -139,30 +139,6 @@ Flow(
         )
       ),
       update_schema('worldwide-aggregated', fields=[
-        {
-          "format": "default",
-          "name": "Province/State",
-          "type": "string"
-        },
-        {
-          "format": "default",
-          "name": "Country/Region",
-          "type": "string"
-        },
-        {
-          "decimalChar": ".",
-          "format": "default",
-          "groupChar": "",
-          "name": "Lat",
-          "type": "number"
-        },
-        {
-          "decimalChar": ".",
-          "format": "default",
-          "groupChar": "",
-          "name": "Long",
-          "type": "number"
-        },
         {
           "format": "%Y-%m-%d",
           "name": "Date",