Feat: Display the knowledge graph on the knowledge base page #4543 (#4587)

### What problem does this PR solve?

Feat: Display the knowledge graph on the knowledge base page #4543

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/hooks/chunk-hooks.ts

@@ -206,23 +206,3 @@ export const useFetchChunk = (chunkId?: string): ResponseType<any> => {
 
   return data;
 };
-
-export const useFetchKnowledgeGraph = (
-  documentId: string,
-): ResponseType<any> => {
-  const { data } = useQuery({
-    queryKey: ['fetchKnowledgeGraph', documentId],
-    initialData: true,
-    enabled: !!documentId,
-    gcTime: 0,
-    queryFn: async () => {
-      const data = await kbService.knowledge_graph({
-        doc_id: documentId,
-      });
-
-      return data;
-    },
-  });
-
-  return data;
-};