remove mock-filled test for Cask.init

test/cask_test.rb

@@ -22,14 +22,4 @@ describe Cask do
       all_casks.each { |cask| cask.must_be_kind_of String }
     end
   end
-
-  describe "init" do
-    it "sets up dependent directories required for us to properly function" do
-      HOMEBREW_CACHE.stubs(:exist?).returns(false)
-      Cask.appdir.stubs(:exist?).returns(false)
-      HOMEBREW_CACHE.expects :mkpath
-      Cask.appdir.expects :mkpath
-      Cask.init
-    end
-  end
 end