Remove dead comments.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61201 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Analysis/LoopInfo.cpp b/lib/Analysis/LoopInfo.cpp
index b6c6c5f..275331b 100644
--- a/lib/Analysis/LoopInfo.cpp
+++ b/lib/Analysis/LoopInfo.cpp
@@ -35,9 +35,6 @@
 // Loop implementation
 //
 
-/// getNumBackEdges - Calculate the number of back edges to the loop header.
-///
-
 //===----------------------------------------------------------------------===//
 // LoopInfo implementation
 //