Remove old REE versions that aren't downloadable anymore

Rubyforge was shut down in May 2014. REE in general is a project that
has reached its End of Life. This removes support for REE versions that
can't be downloaded anymore. Newer REE releases can still be installed.

share/ruby-build/ree-1.8.6-2009.06

-require_gcc
-install_package "ruby-enterprise-1.8.6-20090610" "http://files.rubyforge.vm.bytemark.co.uk/emm-ruby/ruby-enterprise-1.8.6-20090610.tar.gz#8bfb592b22f8d5131c0ea3a54769c75a5b2fba88ba9244a1bc8c0442fa7df417" ree_installer
-install_package "rubygems-1.4.2" "http://production.cf.rubygems.org/rubygems/rubygems-1.4.2.tgz#85da41916deff8883a75710d69d43727a36b4573dd099600f9ff4032700ba5c0" ruby

share/ruby-build/ree-1.8.7-2009.09

-require_gcc
-install_package "ruby-enterprise-1.8.7-20090928" "http://files.rubyforge.vm.bytemark.co.uk/emm-ruby/ruby-enterprise-1.8.7-20090928.tar.gz#57299d73a65b527b6a849f89bdb92e3608f8cb3af77801ae6716a661857d7605" ree_installer
-install_package "rubygems-1.6.2" "http://production.cf.rubygems.org/rubygems/rubygems-1.6.2.tgz#cb5261818b931b5ea2cb54bc1d583c47823543fcf9682f0d6298849091c1cea7" ruby

share/ruby-build/ree-1.8.7-2009.10

-require_gcc
-install_package "ruby-enterprise-1.8.7-2009.10" "http://files.rubyforge.vm.bytemark.co.uk/emm-ruby/ruby-enterprise-1.8.7-2009.10.tar.gz#d4f280adf03b59bdb5c8c690f1c322c0d2aa0a7c16797928d759a4d8885333a3" ree_installer
-install_package "rubygems-1.6.2" "http://production.cf.rubygems.org/rubygems/rubygems-1.6.2.tgz#cb5261818b931b5ea2cb54bc1d583c47823543fcf9682f0d6298849091c1cea7" ruby

share/ruby-build/ree-1.8.7-2010.01

-require_gcc
-install_package "ruby-enterprise-1.8.7-2010.01" "http://files.rubyforge.vm.bytemark.co.uk/emm-ruby/ruby-enterprise-1.8.7-2010.01.tar.gz#ccdf836693ea9c110bf8b97ced91be3db100487428a6668d0b45fb883fa6793d" ree_installer
-install_package "rubygems-1.6.2" "http://production.cf.rubygems.org/rubygems/rubygems-1.6.2.tgz#cb5261818b931b5ea2cb54bc1d583c47823543fcf9682f0d6298849091c1cea7" ruby

share/ruby-build/ree-1.8.7-2010.02

-require_gcc
-install_package "ruby-enterprise-1.8.7-2010.02" "http://files.rubyforge.vm.bytemark.co.uk/emm-ruby/ruby-enterprise-1.8.7-2010.02.tar.gz#5e7268021aa30f9b79f3ed066989cffc8b31b17db9e2aca40c039ff017da4813" ree_installer
-install_package "rubygems-1.6.2" "http://production.cf.rubygems.org/rubygems/rubygems-1.6.2.tgz#cb5261818b931b5ea2cb54bc1d583c47823543fcf9682f0d6298849091c1cea7" ruby