Revert "[MM-41576] Revamp database schema version (#19586)" (#19746)

* Revert "[MM-41576] Revamp database schema version (#19586)"

This reverts commit 645fee3fe3.

* Revert "MM-42049 - license endpoint not working (#19686)"

This reverts commit 4fe89e5847.

api4/config_test.go

@@ -577,7 +577,7 @@ func TestGetOldClientConfig(t *testing.T) {
 		config, _, err := client.GetOldClientConfig("")
 		require.NoError(t, err)
 
-		require.Empty(t, config["Version"], "config not returned correctly")
+		require.NotEmpty(t, config["Version"], "config not returned correctly")
 		require.Empty(t, config["GoogleDeveloperKey"], "config should be missing developer key")
 	})