Chore: Remove bus.Bus field (#47695) (#47704)

* Chore: Remove bus.Bus field

* fix integration test

(cherry picked from commit e86b6662a1)

Co-authored-by: Serge Zaitsev <serge.zaitsev@grafana.com>

pkg/tests/api/alerting/api_prometheus_test.go

@@ -14,7 +14,6 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/grafana/grafana/pkg/bus"
 	"github.com/grafana/grafana/pkg/infra/tracing"
 	"github.com/grafana/grafana/pkg/models"
 	dashboardsstore "github.com/grafana/grafana/pkg/services/dashboards/database"
@@ -35,8 +34,6 @@ func TestPrometheusRules(t *testing.T) {
 	})
 
 	grafanaListedAddr, store := testinfra.StartGrafana(t, dir, path)
-	// override bus to get the GetSignedInUserQuery handler
-	store.Bus = bus.GetBus()
 
 	// Create the namespace under default organisation (orgID = 1) where we'll save our alerts to.
 	_, err = createFolder(t, store, 0, "default")
@@ -330,8 +327,6 @@ func TestPrometheusRulesFilterByDashboard(t *testing.T) {
 	})
 
 	grafanaListedAddr, store := testinfra.StartGrafana(t, dir, path)
-	// override bus to get the GetSignedInUserQuery handler
-	store.Bus = bus.GetBus()
 
 	// Create the namespace under default organisation (orgID = 1) where we'll save our alerts to.
 	dashboardUID, err := createFolder(t, store, 0, "default")
@@ -625,8 +620,6 @@ func TestPrometheusRulesPermissions(t *testing.T) {
 
 	grafanaListedAddr, store := testinfra.StartGrafana(t, dir, path)
 	dashboardsStore := dashboardsstore.ProvideDashboardStore(store)
-	// override bus to get the GetSignedInUserQuery handler
-	store.Bus = bus.GetBus()
 
 	// Create a user to make authenticated requests
 	createUser(t, store, models.CreateUserCommand{