Remove debugging statement that broke data import.
Remove debugging statement that broke data import.

* data/import_into_postgres.js: Remove a debugging console.log()
  statement that caused `node data/import_into_postgres.js` to
  fail with this error:

    Unhandled rejection TypeError: Converting circular structure to JSON
        at Object.stringify (native)
        at data/import_into_postgres.js:22:65
        at tryCatcher (node_modules/sequelize/node_modules/bluebird/js/main/util.js:24:31)
        at Promise._settlePromiseFromHandler (node_modules/sequelize/node_modules/bluebird/js/main/promise.js:454:31)
        at Promise._settlePromiseAt (node_modules/sequelize/node_modules/bluebird/js/main/promise.js:530:18)
        at Async._drainQueue (node_modules/sequelize/node_modules/bluebird/js/main/async.js:187:12)
        at Async._drainQueues (node_modules/sequelize/node_modules/bluebird/js/main/async.js:192:10)
        at Async.drainQueues (node_modules/sequelize/node_modules/bluebird/js/main/async.js:15:14)
        at process._tickCallback (node.js:419:13)

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