Mojo: DataPipe: Delete obsolete TODO/FIXME.

I did it/fixed it.

TBR=darin@chromium.org

Review URL: https://codereview.chromium.org/134663002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@244221 0039d316-1c4b-4281-b951-d872f2087c98

mojo/system/data_pipe.h

@@ -116,7 +116,6 @@ class MOJO_SYSTEM_IMPL_EXPORT DataPipe :
   virtual MojoWaitFlags ConsumerSatisfiableFlagsNoLock() = 0;
 
   // Thread-safe and fast (they don't take the lock):
-  // TODO(vtl): FIXME -- "may discard" not respected
   bool may_discard() const { return may_discard_; }
   size_t element_num_bytes() const { return element_num_bytes_; }
   size_t capacity_num_bytes() const { return capacity_num_bytes_; }