Support: Remove out-of-date comments

The code is now shared... no need for a note.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207555 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/Support/BranchProbability.h b/include/llvm/Support/BranchProbability.h
index 74d6419..c1153ea 100644
--- a/include/llvm/Support/BranchProbability.h
+++ b/include/llvm/Support/BranchProbability.h
@@ -56,10 +56,6 @@
   /// result.
   ///
   /// \return \c Num times \c this.
-  ///
-  /// \note This code should be shared with (or replaced by) the implementation
-  /// of \a BlockFrequency::scale(), which seems to be calculating something
-  /// similar.
   uint64_t scale(uint64_t Num) const;
 
   /// \brief Scale a large integer by the inverse.
@@ -68,10 +64,6 @@
   /// Returns the floor of the result.
   ///
   /// \return \c Num divided by \c this.
-  ///
-  /// \note This code should be shared with (or replaced by) the implementation
-  /// of \a BlockFrequency::scale(), which seems to be calculating something
-  /// similar.
   uint64_t scaleByInverse(uint64_t Num) const;
 
   bool operator==(BranchProbability RHS) const {