More background task cleanup

src/clj/auto_ap/import/plaid.clj

@@ -5,14 +5,12 @@
    [auto-ap.import.transactions :as t]
    [auto-ap.plaid.core :as p]
    [auto-ap.time :as atime]
-   [auto-ap.utils :refer [allow-once by heartbeat]]
+   [auto-ap.utils :refer [allow-once by]]
    [clj-time.coerce :as coerce]
    [clj-time.core :as time]
    [datomic.api :as d]
    [digest :as di]
-   [mount.core :as mount]
-   [unilog.context :as lc]
-   [yang.scheduler :as scheduler]))
+   [unilog.context :as lc]))
 
 (defn get-plaid-accounts [db]
   (-> (d/q '[:find ?ba ?c ?external-id ?t