Revert "[C++11] Add predecessors(BasicBlock *) / successors(BasicBlock *) iterator ranges."

This reverts commit r213474 (and r213475), which causes a miscompile on
a stage2 LTO build.  I'll reply on the list in a moment.

llvm-svn: 213562
diff --git a/llvm/lib/CodeGen/SjLjEHPrepare.cpp b/llvm/lib/CodeGen/SjLjEHPrepare.cpp
index 1cfd4d2..b0950de 100644
--- a/llvm/lib/CodeGen/SjLjEHPrepare.cpp
+++ b/llvm/lib/CodeGen/SjLjEHPrepare.cpp
@@ -142,8 +142,8 @@
   if (!LiveBBs.insert(BB))
     return; // already been here.
 
-  for (BasicBlock *Pred : predecessors(BB))
-    MarkBlocksLiveIn(Pred, LiveBBs);
+  for (pred_iterator PI = pred_begin(BB), E = pred_end(BB); PI != E; ++PI)
+    MarkBlocksLiveIn(*PI, LiveBBs);
 }
 
 /// substituteLPadValues - Substitute the values returned by the landingpad