Call unset for Remove action instead of setWith

setWith sets the value to undefined, but the key remains an enumerable
property on the object. This can cause problems when your UI iterates
over keys of an object and renders based on the key’s existence. Using
unset, the key is removed.

src/reducer.js

@@ -1,6 +1,6 @@
 import { actionTypes } from './constants'
 import { pick, omit, get, isArray, isObject } from 'lodash'
-import { setWith, assign } from 'lodash/fp'
+import { setWith, assign, unset } from 'lodash/fp'
 
 const {
   START,
@@ -185,7 +185,7 @@ const createDataReducer = (actionKey = 'data') => (state = {}, action) => {
     case NO_VALUE:
       return setWith(Object, getDotStrPath(action.path), null, state)
     case REMOVE:
-      return setWith(Object, getDotStrPath(action.path), undefined, state)
+      return unset(getDotStrPath(action.path), state)
     case LOGOUT:
       // support keeping data when logging out - #125
       if (action.preserve) {