Revert "Added two new function: user_exsist_by_id() and user_exsist_b…

…y_email()"

README.md

@@ -164,16 +164,6 @@ sorry John you will be banned :(
 ```php
 $this->aauth->ban_user(3);
 ``` 
-
-You can check if the user exists in the database based on the user's id
-
-```php
-if($this->aauth->user_exsist_by_id(3)){
-//user exsist
-}else{
-//user not exsist
-}
-```
 
 Quick Start is done but thats not the end  
 Take a look [detailed Documentation from wiki](https://github.com/emreakay/CodeIgniter-Aauth/wiki/_pages)   

application/libraries/Aauth.php

@@ -803,25 +803,6 @@ public function is_banned($user_id) {
             return FALSE;
     }
 
-    /**
-     * user_exsist_by_id
-     * Check if user exist by user id
-     * @param $user_id
-     *
-     * @return bool
-     */
-    public function user_exsist_by_id( $user_id ) {
-        $query = $this->CI->db->where('id', $user_id);
-
-        $query = $this->CI->db->get($this->config_vars['users']);
-
-        if ($query->num_rows() > 0)
-            return TRUE;
-        else
-            return FALSE;
-    }
-
-
     /**
      * Get user id
      * Get user id from email address, if par. not given, return current user's id