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) = @_;