Remove isKittyCtrl and isKittyKey from public exports

These generic helpers aren't used externally and would require
exporting MODIFIERS constants to be ergonomic. The specific
isCtrl* helpers cover all practical use cases.

packages/tui/src/index.ts

@@ -31,8 +31,6 @@ export {
 	isCtrlT,
 	isCtrlU,
 	isCtrlW,
-	isKittyCtrl,
-	isKittyKey,
 	isShiftTab,
 	Keys,
 } from "./keys.js";