feat: remove useless option in KeepAlive (#3170)

packages/runtime-core/src/components/KeepAlive.ts

@@ -70,8 +70,6 @@ const KeepAliveImpl = {
   // would prevent it from being tree-shaken.
   __isKeepAlive: true,
 
-  inheritRef: true,
-
   props: {
     include: [String, RegExp, Array],
     exclude: [String, RegExp, Array],