Move cluster, webhub and store out of Server (#20899)

app/users/errors.go

@@ -12,10 +12,6 @@ var (
 	UserCreationDisabledError = errors.New("user creation is not allowed")
 	UserStoreIsEmptyError     = errors.New("could not check if the user store is empty")
 
-	GetTokenError            = errors.New("could not get token")
-	GetSessionError          = errors.New("could not get session")
-	DeleteTokenError         = errors.New("could not delete token")
-	DeleteSessionError       = errors.New("could not delete session")
 	DeleteAllAccessDataError = errors.New("could not delete all access data")
 
 	DefaultFontError   = errors.New("could not get default font")