chore(kit): remove unused internals (#22555)

packages/kit/src/internal/task.ts

@@ -1,42 +0,0 @@
-export function sequence<T, R> (
-  tasks: T[],
-  fn: (task: T) => R
-) {
-  return tasks.reduce(
-    (promise, task): any => promise.then(() => fn(task)),
-    Promise.resolve()
-  )
-}
-
-export function parallel<T, R> (
-  tasks: T[],
-  fn: (task: T) => R
-) {
-  return Promise.all(tasks.map(fn))
-}
-
-export function chainFn<Fn> (base: Fn, fn: Fn): Fn {
-  if (typeof fn !== 'function') {
-    return base
-  }
-  return function (this: any, ...args: any[]) {
-    if (typeof base !== 'function') {
-      return fn.apply(this, args)
-    }
-    let baseResult = base.apply(this, args)
-    // Allow function to mutate the first argument instead of returning the result
-    if (baseResult === undefined) {
-      [baseResult] = args
-    }
-    const fnResult = fn.call(
-      this,
-      baseResult,
-      ...Array.prototype.slice.call(args, 1)
-    )
-    // Return mutated argument if no result was returned
-    if (fnResult === undefined) {
-      return baseResult
-    }
-    return fnResult
-  } as unknown as Fn
-}