diff --git a/apps/web/src/pages/editing-planner/utils/timeline.ts b/apps/web/src/pages/editing-planner/utils/timeline.ts
deleted file mode 100644
index ed44f0fc6..000000000
--- a/apps/web/src/pages/editing-planner/utils/timeline.ts
+++ /dev/null
@@ -1,22 +0,0 @@
-/** 格式化时间为 mm:ss */
-export const formatTime = (sec: number): string => {
-  const m = Math.floor(sec / 60)
-  const s = Math.floor(sec % 60)
-  return `${m}:${s.toString().padStart(2, "0")}`
-}
-
-/** 格式化裁剪时间（精确到 0.1 秒） */
-export const formatTrimTime = (sec: number): string => {
-  return `${sec.toFixed(1)}s`
-}
-
-/** 生成时间标尺刻度 */
-export const generateRulerMarks = (totalDuration: number, step: number): number[] => {
-  const marks: number[] = []
-  // #1790: 无片段时不显示时间刻度
-  if (totalDuration <= 0) return marks
-  for (let t = 0; t <= totalDuration + step; t += step) {
-    marks.push(t)
-  }
-  return marks
-}