[fix] remove copy as it requires write-stream

Author: jcrugzz

lib/levelup.js

@@ -449,7 +449,6 @@ function utilStatic (name) {
 }
 
 module.exports         = LevelUP
-module.exports.copy    = util.copy
 // DEPRECATED: prefer accessing LevelDOWN for this: require('leveldown').destroy()
 module.exports.destroy = utilStatic('destroy')
 // DEPRECATED: prefer accessing LevelDOWN for this: require('leveldown').repair()

lib/util.js

@@ -23,13 +23,6 @@ var extend        = require('xtend')
       return eo
     }())
 
-function copy (srcdb, dstdb, callback) {
-  srcdb.readStream()
-    .pipe(dstdb.writeStream())
-    .on('close', callback ? callback : function () {})
-    .on('error', callback ? callback : function (err) { throw err })
-}
-
 function getOptions (levelup, options) {
   var s = typeof options == 'string' // just an encoding
   if (!s && options && options.encoding && !options.valueEncoding)
@@ -84,7 +77,6 @@ function isDefined (v) {
 
 module.exports = {
     defaultOptions  : defaultOptions
-  , copy            : copy
   , getOptions      : getOptions
   , getLevelDOWN    : getLevelDOWN
   , dispatchError   : dispatchError