$disable_text set but not used anywhere

$disable_text is set on line 112 of pathauto.admin.inc, but apparently not actually used anywhere.

freso@nayru /s/h/l/h/d/s/a/m/pathauto> grep "disable_text" **
pathauto.admin.inc: $disable_text = '';
pathauto_string_spring_cleaning.patch: $disable_text = '';
pathauto_using_transliterate_no_rm.patch: $disable_text = '';
freso@nayru /s/h/l/h/d/s/a/m/pathauto>

I'm not checking this in straight away, in case there's some obscure reason that it is needed... ?