Removed unused file.

scripts/common.js

@@ -1,29 +0,0 @@
-const { spawn } = require('child_process');
-
-function getDatabase() {
-  return process.env.DATABASE_URL.split(':')[0];
-}
-
-function runCommand(cmd, args = []) {
-  return new Promise((resolve, reject) => {
-    const child = spawn(cmd, args);
-
-    child.stdout.on('data', data => process.stdout.write(data));
-
-    child.stderr.on('data', data => process.stdout.write(data));
-
-    child.on('error', err => reject(err));
-
-    child.on('exit', (code, signal) => resolve({ code, signal }));
-  });
-}
-
-function getNpmCommand() {
-  return /^win/.test(process.platform) ? 'npm.cmd' : 'npm';
-}
-
-module.exports = {
-  getDatabase,
-  runCommand,
-  getNpmCommand,
-};