Revert "feat: 第一个可以用的 ink 组件抽象 (#158)" (#175)

This reverts commit c445f43f8d.

packages/@ant/ink/src/core/line-width-cache.ts

@@ -1,24 +0,0 @@
-import { stringWidth } from './stringWidth.js'
-
-// During streaming, text grows but completed lines are immutable.
-// Caching stringWidth per-line avoids re-measuring hundreds of
-// unchanged lines on every token (~50x reduction in stringWidth calls).
-const cache = new Map<string, number>()
-
-const MAX_CACHE_SIZE = 4096
-
-export function lineWidth(line: string): number {
-  const cached = cache.get(line)
-  if (cached !== undefined) return cached
-
-  const width = stringWidth(line)
-
-  // Evict when cache grows too large (e.g. after many different responses).
-  // Simple full-clear is fine — the cache repopulates in one frame.
-  if (cache.size >= MAX_CACHE_SIZE) {
-    cache.clear()
-  }
-
-  cache.set(line, width)
-  return width
-}