Chore: Remove Store interface and use db.DB instead (#60160)

* Chore: Remove Store interface and use db.DB instead

* use old-style session exec

pkg/services/sqlstore/store.go

@@ -1,26 +0,0 @@
-package sqlstore
-
-import (
-	"context"
-
-	"xorm.io/core"
-
-	"github.com/grafana/grafana/pkg/models"
-	"github.com/grafana/grafana/pkg/services/sqlstore/migrator"
-	"github.com/grafana/grafana/pkg/services/sqlstore/session"
-)
-
-type Store interface {
-	GetDialect() migrator.Dialect
-	GetDBType() core.DbType
-	WithDbSession(ctx context.Context, callback DBTransactionFunc) error
-	WithNewDbSession(ctx context.Context, callback DBTransactionFunc) error
-	WithTransactionalDbSession(ctx context.Context, callback DBTransactionFunc) error
-	InTransaction(ctx context.Context, fn func(ctx context.Context) error) error
-	Migrate(bool) error
-	Sync() error
-	Reset() error
-	Quote(value string) string
-	GetDBHealthQuery(ctx context.Context, query *models.GetDBHealthQuery) error
-	GetSqlxSession() *session.SessionDB
-}