chore: warnings for ref transform

packages/compiler-sfc/src/warn.ts

@@ -14,18 +14,3 @@ export function warn(msg: string) {
     `\x1b[1m\x1b[33m[@vue/compiler-sfc]\x1b[0m\x1b[33m ${msg}\x1b[0m\n`
   )
 }
-
-export function warnExperimental(feature: string, url: string) {
-  // eslint-disable-next-line
-  if (typeof window !== 'undefined') {
-    return
-  }
-  warnOnce(
-    `${feature} is still an experimental proposal.\n` +
-      `Follow its status at ${url}.`
-  )
-  warnOnce(
-    `When using experimental features,\n` +
-      `it is recommended to pin your vue dependencies to exact versions to avoid breakage.`
-  )
-}