FeatureFlags: Revert managing feature flags outside of settings.Cfg (#44382)

* Revert "FeatureToggles: register all enterprise feature toggles (#44336)"

This reverts commit f53b3fb007.

* Revert "FeatureFlags: manage feature flags outside of settings.Cfg (#43692)"

This reverts commit f94c0decbd.

pkg/tsdb/testdatasource/testdata.go

@@ -10,13 +10,11 @@ import (
 	"github.com/grafana/grafana-plugin-sdk-go/data"
 
 	"github.com/grafana/grafana/pkg/infra/log"
-	"github.com/grafana/grafana/pkg/services/featuremgmt"
 	"github.com/grafana/grafana/pkg/setting"
 )
 
-func ProvideService(cfg *setting.Cfg, features *featuremgmt.FeatureToggles) *Service {
+func ProvideService(cfg *setting.Cfg) *Service {
 	s := &Service{
-		features:  features,
 		queryMux:  datasource.NewQueryTypeMux(),
 		scenarios: map[string]*Scenario{},
 		frame: data.NewFrame("testdata",
@@ -48,7 +46,6 @@ type Service struct {
 	labelFrame      *data.Frame
 	queryMux        *datasource.QueryTypeMux
 	resourceHandler backend.CallResourceHandler
-	features        *featuremgmt.FeatureToggles
 }
 
 func (s *Service) QueryData(ctx context.Context, req *backend.QueryDataRequest) (*backend.QueryDataResponse, error) {