Remove unused log module from region

Signed-off-by: João Victor Tozatti Risso <jvtr12@inf.ufpr.br>

src/libs/routes/region.js

 const express = require('express');
+
 const regionApp = express();
+
 const libs = `${process.cwd()}/libs`;
-const log = require(`${libs}/log`)(module);
+
 const squel = require('squel');
+
 const query = require(`${libs}/middlewares/query`);
+
 const response = require(`${libs}/middlewares/response`);
 
 regionApp.get('/', (req, res, next) => {