rom-tools: update livecheck

Formula/rom-tools.rb

@@ -8,14 +8,8 @@ class RomTools < Formula
   license "GPL-2.0-or-later"
   head "https://github.com/mamedev/mame.git"
 
-  # MAME tags (and filenames) are formatted like `mame0226`, so livecheck will
-  # report the version like `0226`. We work around this by matching the link
-  # text for the release title, since it contains the properly formatted version
-  # (e.g., 0.226).
   livecheck do
-    url :stable
-    strategy :github_latest
-    regex(%r{release-header.*?/releases/tag/mame[._-]?\d+(?:\.\d+)*["' >]>MAME v?(\d+(?:\.\d+)+)}im)
+    formula "mame"
   end
 
   bottle do