Cloudwatch: Deprecate cloudwatchNewRegionsHandler feature toggle and remove core imports from featuremgmt (#81310)

* Remove core imports from grafana/pkg/services/featuremgmt in CloudWatch

pkg/tsdb/cloudwatch/metric_data_input_builder_test.go

@@ -9,7 +9,6 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/grafana/grafana/pkg/services/featuremgmt"
 	"github.com/grafana/grafana/pkg/tsdb/cloudwatch/models"
 )
 
@@ -27,7 +26,7 @@ func TestMetricDataInputBuilder(t *testing.T) {
 
 	for _, tc := range tests {
 		t.Run(tc.name, func(t *testing.T) {
-			executor := newExecutor(nil, newTestConfig(), &fakeSessionCache{}, featuremgmt.WithFeatures())
+			executor := newExecutor(nil, newTestConfig(), &fakeSessionCache{})
 			query := getBaseQuery()
 			query.TimezoneUTCOffset = tc.timezoneUTCOffset