[C++11] Replace llvm::next and llvm::prior with std::next and std::prev.

Remove the old functions.

llvm-svn: 202636
diff --git a/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp b/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
index be8e5d8..fe163d4 100644
--- a/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
+++ b/llvm/lib/Target/MSP430/MSP430ISelLowering.cpp
@@ -1248,8 +1248,7 @@
 
   // Update machine-CFG edges by transferring all successors of the current
   // block to the block containing instructions after shift.
-  RemBB->splice(RemBB->begin(), BB,
-                llvm::next(MachineBasicBlock::iterator(MI)),
+  RemBB->splice(RemBB->begin(), BB, std::next(MachineBasicBlock::iterator(MI)),
                 BB->end());
   RemBB->transferSuccessorsAndUpdatePHIs(BB);
 
@@ -1344,8 +1343,7 @@
   // Update machine-CFG edges by transferring all successors of the current
   // block to the new block which will contain the Phi node for the select.
   copy1MBB->splice(copy1MBB->begin(), BB,
-                   llvm::next(MachineBasicBlock::iterator(MI)),
-                   BB->end());
+                   std::next(MachineBasicBlock::iterator(MI)), BB->end());
   copy1MBB->transferSuccessorsAndUpdatePHIs(BB);
   // Next, add the true and fallthrough blocks as its successors.
   BB->addSuccessor(copy0MBB);