Fix comment in UUID::Random()

Change-Id: Iaf085338bfa972a17da297a4996b9bdcf2ac6b41
Signed-off-by: James Kuszmaul <james.kuszmaul@bluerivertech.com>
diff --git a/aos/uuid.cc b/aos/uuid.cc
index 9da2cbf..f794ec8 100644
--- a/aos/uuid.cc
+++ b/aos/uuid.cc
@@ -95,12 +95,6 @@
 }  // namespace internal
 
 UUID UUID::Random() {
-  // Note: This only provides 32 bits of randomness to each thread. However, by
-  // keeping persistent pseudo-random number generators, we can increase the
-  // overall randomness of each call to Random() (since, essentially, the
-  // randomness is coming from the combination of the initial seed + the number
-  // of times that Random() has been called in the given thread).
-  //
   // thread_local to guarantee safe use of the generator itself.
   thread_local std::mt19937 gen(internal::FullySeededRandomGenerator());