update youtube transcript tool

tools/youtube_transcript.py

@@ -1,6 +1,4 @@
-from typing import Any, Optional
 from smolagents.tools import Tool
-import duckduckgo_search
 
 class YoutubeTranscriptTool(Tool):
     name = "youtube_transcript"
@@ -8,14 +6,13 @@ class YoutubeTranscriptTool(Tool):
     inputs = {'video_id': {'type': 'string', 'description': 'The Id of YouTube video'}}
     output_type = "list[dict]"
 
-    def __init__(self, max_results=10, **kwargs):
+    def __init__(self):
         super().__init__()
-        self.max_results = max_results
         try:
             from youtube_transcript_api import YouTubeTranscriptApi
         except ImportError as e:
             raise ImportError(
-                "You must install package `duckduckgo_search` to run this tool: for instance run `pip install duckduckgo-search`."
+                "You must install package `youtube_transcript_api` to run this tool: for instance run `pip install youtube_transcript_api`."
             ) from e
         self.ytt_api = YouTubeTranscriptApi()