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diff --git a/lib/otphp/lib/otp.php b/lib/otphp/lib/otp.php
deleted file mode 100644
index 77bcfe97..00000000
--- a/lib/otphp/lib/otp.php
+++ /dev/null
@@ -1,120 +0,0 @@
-<?php
-/*
- * Copyright (c) 2011 Le Lag 
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
-
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-namespace OTPHP {
-/**
- * One Time Password Generator 
- * 
- * The OTP class allow the generation of one-time
- * password that is described in rfc 4xxx.
- * 
- * This is class is meant to be compatible with 
- * Google Authenticator.
- *
- * This class was originally ported from the rotp
- * ruby library available at https://github.com/mdp/rotp
- */
-class OTP {
-    /**
-     * The base32 encoded secret key
-     * @var string
-     */
-    public $secret;
-
-    /**
-     * The algorithm used for the hmac hash function
-     * @var string
-     */
-    public $digest;
-
-    /**
-     * The number of digits in the one-time password
-     * @var integer
-     */ 
-    public $digits;
-
-    /**
-     * Constructor for the OTP class
-     * @param string $secret the secret key
-     * @param array $opt options array can contain the
-     * following keys :
-     *   @param integer digits : the number of digits in the one time password
-     *   Currently Google Authenticator only support 6. Defaults to 6.
-     *   @param string digest : the algorithm used for the hmac hash function
-     *   Google Authenticator only support sha1. Defaults to sha1
-     *
-     * @return new OTP class.
-     */
-    public function __construct($secret, $opt = Array()) {
-      $this->digits = isset($opt['digits']) ? $opt['digits'] : 6;
-      $this->digest = isset($opt['digest']) ? $opt['digest'] : 'sha1';
-      $this->secret = $secret;
-    }
-
-    /**
-     * Generate a one-time password
-     *
-     * @param integer $input : number used to seed the hmac hash function.
-     * This number is usually a counter (HOTP) or calculated based on the current
-     * timestamp (see TOTP class).
-     * @return integer the one-time password 
-     */
-    public function generateOTP($input) {
-      $hash = hash_hmac($this->digest, $this->intToBytestring($input), $this->byteSecret());
-      foreach(str_split($hash, 2) as $hex) { // stupid PHP has bin2hex but no hex2bin WTF
-        $hmac[] = hexdec($hex);
-      }
-      $offset = $hmac[19] & 0xf;
-      $code = ($hmac[$offset+0] & 0x7F) << 24 |
-        ($hmac[$offset + 1] & 0xFF) << 16 |
-        ($hmac[$offset + 2] & 0xFF) << 8 |
-        ($hmac[$offset + 3] & 0xFF);
-      return $code % pow(10, $this->digits);
-    }
-
-    /**
-     * Returns the binary value of the base32 encoded secret
-     * @access private
-     * This method should be private but was left public for
-     * phpunit tests to work.
-     * @return binary secret key
-     */
-    public function byteSecret() {
-      return \Base32::decode($this->secret);
-    }
-
-    /**
-     * Turns an integer in a OATH bytestring
-     * @param integer $int
-     * @access private
-     * @return string bytestring
-     */
-    public function intToBytestring($int) {
-      $result = Array();
-      while($int != 0) {
-        $result[] = chr($int & 0xFF);
-        $int >>= 8;
-      }
-      return str_pad(join(array_reverse($result)), 8, "\000", STR_PAD_LEFT);
-    }
-  }
-}