Fix lint

tests/client/amo/sagas/testCategories.js

@@ -1,9 +1,8 @@
 import { hideLoading, showLoading } from 'react-redux-loading-bar';
-import { call, put, select, takeEvery } from 'redux-saga/effects';
+import { takeEvery } from 'redux-saga/effects';
 import SagaTester from 'redux-saga-tester';
 
 import categoriesSaga, { fetchCategories } from 'amo/sagas/categories';
-import { getApi } from 'amo/sagas/utils';
 import createStore from 'amo/store';
 import * as actions from 'core/actions/categories';
 import * as api from 'core/api';
@@ -17,8 +16,6 @@ import categoriesReducer from 'core/reducers/categories';
 import { signedInApiState } from 'tests/client/amo/helpers';
 
 
-const categories = {};
-
 describe('categoriesSaga', () => {
   let initialState;
   let sagaTester;