Remove unsupported country, and clamp to known regions (#8533)

Author: rolf-moz

sql/moz-fx-data-shared-prod/telemetry_derived/newtab_merino_extract_v3/query.sql

@@ -103,7 +103,7 @@ country_aggregates AS (
   WHERE
     -- Gather country (a.k.a. region) specific engagement for all countries that share a feed.
     -- https://mozilla-hub.atlassian.net/wiki/x/JY3LB
-    normalized_country_code IN ('US', 'CA', 'DE', 'CH', 'AT', 'BE', 'GB', 'IE')
+    normalized_country_code IN ('US', 'CA', 'DE', 'CH', 'AT', 'GB', 'IE')
 ),
 /* Combine the "global" (no region) with the "regional" breakdown. */
 combined_results AS (

sql/moz-fx-data-shared-prod/telemetry_derived/newtab_merino_priors_v1/query.sql

@@ -182,6 +182,8 @@ SELECT
   impressions_per_item
 FROM
   per_region_stats_with_impressions
+WHERE
+  region IN ('US', 'CA', 'DE', 'CH', 'AT', 'GB', 'IE')
 UNION ALL
 SELECT
   region,