Revert "fix session, try another way to inject CreateBy"

This reverts commit 3416ed5.

Author: xueyizheng

backend/modules/evaluation/application/experiment_app.go

@@ -10,7 +10,6 @@ import (
 	"time"
 
 	"github.com/bytedance/gg/gptr"
-	loopsession "github.com/coze-dev/coze-loop/backend/infra/middleware/session"
 
 	"github.com/coze-dev/coze-loop/backend/infra/backoff"
 	"github.com/coze-dev/coze-loop/backend/infra/idgen"
@@ -1114,12 +1113,6 @@ func (e *experimentApplication) InsightAnalysisExperiment(ctx context.Context, r
 		session = &entity.Session{
 			UserID: strconv.FormatInt(gptr.Indirect(req.Session.UserID), 10),
 		}
-	} else {
-		logs.CtxInfo(ctx, "InsightAnalysisExperiment found empty userID, expt_id: %v, workspace_id: %v", req.GetExptID(), req.GetWorkspaceID())
-		userId := loopsession.UserIDInCtxOrEmpty(ctx)
-		session = &entity.Session{
-			UserID: userId,
-		}
 	}
 	got, err := e.manager.Get(ctx, req.GetExptID(), req.GetWorkspaceID(), session)
 	if err != nil {