Log message:
Pullup ticket #6440 - requested by taca
textproc/ruby-rexml: build fix

Revisions pulled up:
- textproc/ruby-rexml/Makefile                                  1.13

---
   Module Name:	pkgsrc
   Committed By:	taca
   Date:		Sun Apr 11 00:08:40 UTC 2021

   Modified Files:
   	pkgsrc/textproc/ruby-rexml: Makefile

   Log message:
   textproc/ruby-rexml: do not build on Ruby 3.0

   Do not build on Ruby 3.0 since it contains the same version of rexml
   gem and conflicts with this package.

   Noted by private e-mail from wiz@, thank you!