Remove check for activesupport in activesupport

tests - this is interfering with spec runs
that shouldn't need activesupport.
(Check isn't needed anyway)

chef/tasks/rspec.rb

@@ -41,14 +41,6 @@
 
   desc "Run the rspec tests with activesupport loaded"
   RSpec::Core::RakeTask.new(:spec_activesupport) do |t|
-    #require activesupport to make sure it is on the system and fail early if not found
-    #this has no affect on rspec, which still has to load it itself
-    begin
-      require 'active_support/core_ext'
-    rescue LoadError
-      raise "ActiveSupport not found on system, it is needed to run these tests"
-    end
-
     t.rspec_opts = ['--options', "\"#{CHEF_ROOT}/.rspec\"", "--require active_support/core_ext"]
     t.pattern = FileList['spec/unit/**/*_spec.rb']
   end