remove seemingly unused/dead code

lib/mbtiles.js

@@ -24,7 +24,6 @@ function hash(z, x, y) {
 // MBTiles class for doing common operations (schema setup, tile reading,
 // insertion, etc.)
 module.exports = MBTiles;
-MBTiles.utils = require('./utils');
 MBTiles.schema = fs.readFileSync(__dirname + '/schema.sql', 'utf8');
 
 // Provides access to an mbtiles database file.

lib/utils.js

@@ -1,62 +0,0 @@
-var util = require('util'),
-    EventEmitter = require('events').EventEmitter,
-    utils = {};
-
-utils.table = function(fields) {
-    if (!fields[0]) return;
-    var lengths = fields[0].map(function(val, i) {
-        return Math.max.apply(Math, fields.map(function(field) {
-            if (field[i] === undefined) field[i] = '';
-            return field[i].toString().length;
-        }));
-    });
-    fields.forEach(function(field) {
-        console.warn(
-            field.map(function(val, i) {
-                if (i >= lengths.length - 1) return val;
-                return val + Array(lengths[i] - val.toString().length + 1).join(' ');
-            }).join('  ')
-        );
-    });
-};
-
-function Queue(callback, concurrency) {
-    this.callback = callback;
-    this.concurrency = concurrency || 10;
-    this.next = this.next.bind(this);
-    this.invoke = this.invoke.bind(this);
-    this.queue = [];
-    this.running = 0;
-}
-util.inherits(Queue, EventEmitter);
-
-Queue.prototype.add = function(item) {
-    this.queue.push(item);
-    if (this.running < this.concurrency) {
-        this.running++;
-        this.next();
-    }
-};
-
-Queue.prototype.invoke = function() {
-    if (this.queue.length) {
-        this.callback(this.queue.shift(), this.next);
-    } else {
-        this.next();
-    }
-};
-
-Queue.prototype.next = function(err) {
-    if (this.queue.length) {
-        process.nextTick(this.invoke);
-    } else {
-        this.running--;
-        if (!this.running) {
-            this.emit('empty');
-        }
-    }
-};
-
-utils.Queue = Queue;
-
-module.exports = utils;