Remove unused test

test/unit/vagrant/action/environment_test.rb

@@ -1,16 +0,0 @@
-require File.expand_path("../../../base", __FILE__)
-
-describe Vagrant::Action::Environment do
-  let(:instance) { described_class.new }
-
-  it "should be a hash" do
-    instance.should be_empty
-    instance["foo"] = "bar"
-    instance["foo"].should == "bar"
-  end
-
-  it "should be a hash accessible by string or symbol" do
-    instance["foo"] = "bar"
-    instance[:foo].should == "bar"
-  end
-end