Remove unecessary import and logs from db.js

Author: relekang

src/db.js

@@ -1,4 +1,3 @@
-const flatfile = require('flat-file-db')
 const promise = require('promise')
 
 let adapter
@@ -9,7 +8,6 @@ if (process.env.DB_ADAPTER) {
   const adapterName = `micro-analytics-adapter-${process.env.DB_ADAPTER}`
   try {
     adapter = require(adapterName)
-    console.log(`Using ${adapterName}`)
   } catch (err) {
     if (err.code === 'MODULE_NOT_FOUND') {
       // Console.error a warning message, but normally exit the process to avoid printing ugly npm ERR lines and stack trace.
@@ -18,7 +16,6 @@ if (process.env.DB_ADAPTER) {
     }
   }
 } else {
-  console.log('Using standard flat-file-adapter')
   adapter = require('./flat-file-adapter')
 }