impove: 修复eslint报的错

src/index.js

@@ -12,7 +12,7 @@ const app = dva({
   models: [...models, routerModel],
   extraEnhancers: [autoRehydrate()],
   onError(e) {
-    console.log('onError', e);
+    console.error('onError', e); // eslint-disable-line no-console
   },
 });
 

src/models/login.js

-import { AsyncStorage } from 'react-native';
 import { NavigationActions } from 'react-navigation';
 
 export default {

src/utils/store.js

@@ -11,9 +11,9 @@ export default {
   },
   async setItem(key, value) {
     const item = JSON.stringify(value);
-    return await AsyncStorage.setItem(key, item);
+    return AsyncStorage.setItem(key, item);
   },
   async delItem(key) {
     return AsyncStorage.removeItem(key);
   },
-}
\ No newline at end of file
+};