Fix module including to make buildrq happy

--- lib/Rex/Helper/INI.pm

+++ lib/Rex/Helper/INI.pm

@@ -11,7 +11,7 @@ package Rex::Helper::INI;

 # VERSION

-BEGIN { String::Escape->use('string2hash'); }

+use String::Escape qw(string2hash);

 sub parse {

   my (@lines) = @_;