Remove sqlite transaction tests for ent

Signed-off-by: m.nabokikh <maksim.nabokikh@flant.com>

storage/ent/sqlite.go

@@ -36,7 +36,7 @@ func (s *SQLite3) Open(logger log.Logger) (storage.Storage, error) {
 	// always allow only one connection to sqlite3, any other thread/go-routine
 	// attempting concurrent access will have to wait
 	pool := drv.DB()
-	pool.SetMaxOpenConns(5)
+	pool.SetMaxOpenConns(1)
 
 	databaseClient := client.NewDatabase(
 		client.WithClient(db.NewClient(db.Driver(drv))),

storage/ent/sqlite_test.go

@@ -27,5 +27,4 @@ func newSQLiteStorage() storage.Storage {
 
 func TestSQLite3(t *testing.T) {
 	conformance.RunTests(t, newSQLiteStorage)
-	conformance.RunTransactionTests(t, newSQLiteStorage)
 }