Google play Console FCM Error

I am using my firebase token in firebase DB only, also I have used firebase core and initialize core when screen initialize. But when i am unloading my app on play console then google mailed me this Leaked GCP FCM Server Keys notification, also I had deleted firebase token from fcm. In this artical “Remediation for Exposed Firebase Cloud Messaging (FCM) Server Keys - Google Help” google say you have to delete key token from app i have done first option but when i will delete firebase token from app so how to get data from firebase and also store. please help me, what should do…