Do not need to wrap return in del as a Promise

backend.del should do this by default

Author: megoth

src/user-store.js

@@ -205,8 +205,7 @@ class UserStore {
   deleteUser (user) {
     let userKey = UserStore.normalizeIdKey(user.id)
 
-    return Promise.resolve()
-      .then(() => this.backend.del('users', userKey))
+    return this.backend.del('users', userKey)
   }
 
   /**

test/unit/user-store-test.js

@@ -225,8 +225,8 @@ describe('UserStore', () => {
 
       store.backend.del = sinon.stub()
 
-      return store.deleteUser({ id: userId })
-        .then(() => expect(store.backend.del).to.have.been.calledWith('users', UserStore.normalizeIdKey(userId)))
+      store.deleteUser({ id: userId })
+      expect(store.backend.del).to.have.been.calledWith('users', UserStore.normalizeIdKey(userId))
     })
   })
 })