Fix: Enable Pyright and Fix Typing Errors in Datasets Controller (#26425)

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Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>
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api/controllers/console/datasets/rag_pipeline/rag_pipeline_datasets.py

@@ -1,5 +1,5 @@
-from flask_login import current_user  # type: ignore  # type: ignore
-from flask_restx import Resource, marshal, reqparse  # type: ignore
+from flask_login import current_user
+from flask_restx import Resource, marshal, reqparse
 from sqlalchemy.orm import Session
 from werkzeug.exceptions import Forbidden
 
@@ -20,18 +20,6 @@ from services.entities.knowledge_entities.rag_pipeline_entities import IconInfo,
 from services.rag_pipeline.rag_pipeline_dsl_service import RagPipelineDslService
 
 
-def _validate_name(name):
-    if not name or len(name) < 1 or len(name) > 40:
-        raise ValueError("Name must be between 1 to 40 characters.")
-    return name
-
-
-def _validate_description_length(description):
-    if len(description) > 400:
-        raise ValueError("Description cannot exceed 400 characters.")
-    return description
-
-
 @console_ns.route("/rag/pipeline/dataset")
 class CreateRagPipelineDatasetApi(Resource):
     @setup_required