versions: remove perforce bottle detection.

Library/Homebrew/test/test_versions.rb

@@ -303,9 +303,4 @@ class VersionParsingTests < Test::Unit::TestCase
     assert_version_detected '2.4c',
       'http://loop-aes.sourceforge.net/aespipe/aespipe-v2.4c.tar.bz2'
   end
-
-  def test_perforce_style
-    assert_version_detected '2013.1.610569-x86_64',
-      '/usr/local/perforce-2013.1.610569-x86_64.mountain_lion.bottle.tar.gz'
-  end
 end

Library/Homebrew/version.rb

@@ -262,10 +262,6 @@ class Version
     m = /[-_]([Rr]\d+[AaBb]\d*(?:-\d+)?)/.match(spec_s)
     return m.captures.first unless m.nil?
 
-    # e.g. perforce-2013.1.610569-x86_64
-    m = /-([\d\.]+-x86(_64)?)/.match(stem)
-    return m.captures.first unless m.nil?
-
     # e.g. boost_1_39_0
     m = /((?:\d+_)+\d+)$/.match(stem)
     return m.captures.first.gsub('_', '.') unless m.nil?