Vamos ao que interessa.

Como o INGLÊS é uma linguagem protegida no IPB, você não consegue removê-lo! Mas você pode ocultá-lo.

Abra o arquivo admin\sources\classes\output\formats\html\htmlOutp ut.php e localize:
Código PHP:
  /**
        * Fetch language drop down box
        *
        * @access       private
        * @return       string          Drop down list.
        */
        
private function html_buildLanguageDropDown()
        {
                
$lang_list "";
                
$cache  $this->caches['lang_data'];

                
//-----------------------------------------
                // Roots
                //-----------------------------------------
                
                
if ( is_array$cache ) AND count$cache ) )
                {
                        foreach( 
$cache as $data )
                        {
                                if ( 
$this->member->language_id == $data['lang_id'] )
                                {
                                        
$selected ' selected="selected"';
                                }
                                else
                                {
                                        
$selected "";
                                }
                        
                                
$lang_list .= "\n<option value='{$data['lang_id']}'{$selected}>{$data['lang_title']}</option>";
                        }
                }
        
                return 
$lang_list;
        } 
Substitua por:

Código PHP:
     /**
      * Fetch language drop down box
      *
      * @access private
      * @return string          Drop down list.
      */
        
private function html_buildLanguageDropDown()
        {
                
$lang_list "";
                
$cache  $this->caches['lang_data'];
 
                
//-----------------------------------------
                // Roots
                //-----------------------------------------
                
                
if ( is_array$cache ) AND count$cache ) )
                {
                        foreach( 
$cache as $data )
                        {
                                if ( 
$data['lang_short'] == 'en-US' )
                                {
                                        continue;
                                }
                                
                                if ( 
$this->member->language_id == $data['lang_id'] )
                                {
                                        
$selected ' selected="selected"';
                                }
                                else
                                {
                                        
$selected "";
                                }
                        
                                
$lang_list .= "\n<option value='{$data['lang_id']}'{$selected}>{$data['lang_title']}</option>";
                        }
                }
        
                return 
$lang_list;
        } 
ficará como essa imagem abaixo:


Créditos:Adriano
Fomte: SOSInvision