Update chunk/metadata cli (#15055)

### What problem does this PR solve?

Update chunk/metadata cli

### Type of change

- [ ] Refactoring

internal/handler/kb.go

@@ -249,74 +249,6 @@ func (h *KnowledgebaseHandler) ListTagsFromKbs(c *gin.Context) {
 	jsonResponse(c, common.CodeSuccess, []string{}, "success")
 }
 
-// RemoveTags handles the remove tags request
-// @Summary Remove Tags
-// @Description Remove tags from a knowledge base
-// @Tags knowledgebase
-// @Accept json
-// @Produce json
-// @Security ApiKeyAuth
-// @Param kb_id path string true "Knowledge Base ID"
-// @Param request body object{tags []string} true "tags to remove"
-// @Success 200 {object} map[string]interface{}
-// @Router /v1/kb/{kb_id}/rm_tags [post]
-func (h *KnowledgebaseHandler) RemoveTags(c *gin.Context) {
-	user, errorCode, errorMessage := GetUser(c)
-	if errorCode != common.CodeSuccess {
-		jsonError(c, errorCode, errorMessage)
-		return
-	}
-
-	kbID := c.Param("kb_id")
-	if kbID == "" {
-		jsonError(c, common.CodeDataError, "kb_id is required")
-		return
-	}
-
-	if !h.kbService.Accessible(kbID, user.ID) {
-		jsonError(c, common.CodeAuthenticationError, "No authorization.")
-		return
-	}
-
-	var req struct {
-		Tags []string `json:"tags" binding:"required"`
-	}
-	if err := c.ShouldBindJSON(&req); err != nil {
-		jsonError(c, common.CodeDataError, err.Error())
-		return
-	}
-
-	// Get KB to find tenant_id and build index name
-	kb, err := h.kbService.GetByID(kbID)
-	if err != nil {
-		jsonError(c, common.CodeDataError, "knowledge base not found")
-		return
-	}
-
-	// Build index name prefix: ragflow_<tenant_id>
-	indexName := "ragflow_" + kb.TenantID
-
-	// For each tag, call UpdateChunk to remove it from documents
-	for _, tag := range req.Tags {
-		condition := map[string]interface{}{
-			"tag_kwd": tag,
-			"kb_id":   kbID,
-		}
-		newValue := map[string]interface{}{
-			"remove": map[string]interface{}{
-				"tag_kwd": tag,
-			},
-		}
-		err := h.kbService.RemoveTag(condition, newValue, indexName, kbID)
-		if err != nil {
-			jsonError(c, common.CodeServerError, "Failed to remove tag: "+err.Error())
-			return
-		}
-	}
-
-	jsonResponse(c, common.CodeSuccess, true, "success")
-}
-
 // RenameTag handles the rename tag request
 // @Summary Rename Tag
 // @Description Rename a tag in a knowledge base