remove unused vars (#617)

Author: undefined-moe

README.md

@@ -6,7 +6,7 @@
 
 <p align="center">
   <a href="https://github.com/vijos/vj4/actions" target="_blank"><img src="https://github.com/vijos/vj4/actions/workflows/test.yml/badge.svg?branch=master"></a>
-  <a href="https://codeclimate.com/github/vijos/vj4" target="_blank"><img src="https://img.shields.io/codeclimate/github/vijos/vj4.svg?style=flat-square"></a>
+  <a href="https://codeclimate.com/github/vijos/vj4/maintainability" target="_blank"><img src="https://api.codeclimate.com/v1/badges/1e9710a66983c8124712/maintainability"></a>
   <a href="https://www.versioneye.com/user/projects/598d6f846725bd005228a0e4" target="_blank"><img src="https://www.versioneye.com/user/projects/598d6f846725bd005228a0e4/badge.svg?style=flat-square"></a>
   <a href="https://raw.githubusercontent.com/vijos/vj4/master/LICENSE" target="_blank"><img src="https://img.shields.io/badge/license-AGPLv3-blue.svg?style=flat-square"></a>
 </p>

scripts/build/utils/transformConstant.js

@@ -62,7 +62,7 @@ function printLiteralOrObject(v) {
     const { __intKey, ...val } = v;
     print('collections.OrderedDict([\n');
     for (const [ name, item ] of _.entries(val)) {
-      print('(')
+      print('(');
       if (__intKey) {
         print(name);
       } else {

vj4/job/difficulty.py

@@ -2,8 +2,6 @@
 import math
 
 from vj4 import db
-from vj4.model import builtin
-from vj4.model import domain
 from vj4.model import document
 from vj4.model.adaptor import problem
 from vj4.util import argmethod