Not really used directly anymore.

libraries/messages.inc.php

@@ -18,7 +18,6 @@ $charset = 'utf-8';
 /* l10n: Text direction, use either ltr or rtl */
 $text_dir = __('ltr');
 
-$strDisabled = __('Disabled');
 $strDocu = __('Documentation');
 
 $strError = __('Error');
@@ -26,8 +25,6 @@ $strErrorSaveTable = __('Error saving coordinates for Designer.');
 
 $strFormEmpty = __('Missing value in the form!');
 
-$strGeneralRelationFeat = __('General relation features');
-
 $strHide         = __('Hide');