remove client.set of user_id

src/index.ts

@@ -3,14 +3,10 @@ import UAParser from 'ua-parser-js'
 
 // Get the user ID stored in the client, if it does not exist, then do not set it.
 const getUserId = (event: MCEvent): string | null => {
- const { client } = event
- const userId = event.payload.user_id || client.get('user_id')
+ const userId = event.payload.user_id
  if (!userId) {
  return null
  }
- if (event.payload.user_id) {
- client.set('user_id', userId, { scope: 'infinite' })
- }
  return userId
 }