diff --git a/packages/frontend/core/src/blocksuite/ai/utils/connector.ts b/packages/frontend/core/src/blocksuite/ai/utils/connector.ts
deleted file mode 100644
index 169052bdd4..0000000000
--- a/packages/frontend/core/src/blocksuite/ai/utils/connector.ts
+++ /dev/null
@@ -1,87 +0,0 @@
-import type { EdgelessRootService } from '@blocksuite/affine/blocks/root';
-import { SurfaceBlockComponent } from '@blocksuite/affine/blocks/surface';
-import type { ConnectorElementModel } from '@blocksuite/affine/model';
-
-export const getConnectorFromId = (
-  id: string,
-  surface: EdgelessRootService
-) => {
-  return surface.elements.filter(
-    v => SurfaceBlockComponent.isConnector(v) && v.source.id === id
-  ) as ConnectorElementModel[];
-};
-export const getConnectorToId = (id: string, surface: EdgelessRootService) => {
-  return surface.elements.filter(
-    v => SurfaceBlockComponent.isConnector(v) && v.target.id === id
-  ) as ConnectorElementModel[];
-};
-export const getConnectorPath = (id: string, surface: EdgelessRootService) => {
-  let current: string | undefined = id;
-  const set = new Set<string>();
-  const result: string[] = [];
-  while (current) {
-    if (set.has(current)) {
-      return result;
-    }
-    set.add(current);
-    const connector = getConnectorToId(current, surface);
-    if (connector.length !== 1) {
-      return result;
-    }
-    current = connector[0].source.id;
-    if (current) {
-      result.unshift(current);
-    }
-  }
-  return result;
-};
-type ElementTree = {
-  id: string;
-  children: ElementTree[];
-};
-export const findTree = (
-  rootId: string,
-  surface: EdgelessRootService
-): ElementTree => {
-  const set = new Set<string>();
-  const run = (id: string): ElementTree | undefined => {
-    if (set.has(id)) {
-      return;
-    }
-    set.add(id);
-    const children = getConnectorFromId(id, surface);
-    return {
-      id,
-      children: children.flatMap(model => {
-        const childId = model.target.id;
-        if (childId) {
-          const elementTree = run(childId);
-          if (elementTree) {
-            return [elementTree];
-          }
-        }
-        return [];
-      }),
-    };
-  };
-  const tree = run(rootId);
-  if (!tree) {
-    throw new Error('tree is not found');
-  }
-  return tree;
-};
-export const findLeaf = (
-  tree: ElementTree,
-  id: string
-): ElementTree | undefined => {
-  if (tree.id === id) {
-    return tree;
-  }
-  for (const child of tree.children) {
-    const result = findLeaf(child, id);
-    if (result) {
-      return result;
-    }
-  }
-  return;
-};