feat(notifications): wire pruneDeadTokens into dailyQuestionReminder

functions/src/notifications/dailyQuestionReminder.ts

@@ -1,6 +1,7 @@
 import * as functions from 'firebase-functions'
 import * as admin from 'firebase-admin'
 import { recipientInQuietHours } from './quietHours'
+import { pruneDeadTokens } from './pruneTokens'
 
 /**
  * Proactive daily question reminder.
@@ -158,6 +159,8 @@ async function sendReminder(
       )
     }
   })
+
+  await pruneDeadTokens(db, userId, tokens, sendResults)
 }
 
 async function getUserTokens(