lint: Fix straightforward ESLint errors

src/bin/extractPadData.js

@@ -10,6 +10,8 @@
 // unhandled rejection into an uncaught exception, which does cause Node.js to exit.
 process.on('unhandledRejection', (err) => { throw err; });
 
+const util = require('util');
+
 if (process.argv.length !== 3) throw new Error('Use: node extractPadData.js $PADID');
 
 // get the padID

src/bin/importSqlFile.js

@@ -4,6 +4,8 @@
 // unhandled rejection into an uncaught exception, which does cause Node.js to exit.
 process.on('unhandledRejection', (err) => { throw err; });
 
+const util = require('util');
+
 const startTime = Date.now();
 
 const log = (str) => {