remove calls to Dispose in specs

Author: cowboyd

spec/c/isolate_spec.rb

@@ -6,8 +6,4 @@
   it 'can create a new isolate' do
     expect(isolate).to be
   end
-
-  it "can be disposed of" do
-    isolate.Dispose()
-  end
 end

spec/c_spec_helper.rb

@@ -23,8 +23,6 @@ def bootstrap_v8_context
         @ctx.Exit
       end
     end
-  ensure
-    @isolate.Dispose()
   end
 end
 

spec/spec_helper.rb

@@ -1,11 +1,5 @@
 require 'v8'
 
-def run_v8_gc
-  V8::C::V8::LowMemoryNotification()
-  while !V8::C::V8::IdleNotification() do
-  end
-end
-
 def rputs(msg)
   puts "<pre>#{ERB::Util.h(msg)}</pre>"
   $stdout.flush