Remove redundant private field.

clang warned about this being unused in Release builds.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163899 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Hexagon/HexagonMachineScheduler.cpp b/lib/Target/Hexagon/HexagonMachineScheduler.cpp
index 838f7b5..3e4b5b6 100644
--- a/lib/Target/Hexagon/HexagonMachineScheduler.cpp
+++ b/lib/Target/Hexagon/HexagonMachineScheduler.cpp
@@ -123,7 +123,7 @@
         << "********** MI Converging Scheduling VLIW BB#" << BB->getNumber()
         << " " << BB->getName()
         << " in_func " << BB->getParent()->getFunction()->getName()
-        << " at loop depth "  << MLI->getLoopDepth(BB)
+        << " at loop depth "  << MLI.getLoopDepth(BB)
         << " \n");
 
   buildDAGWithRegPressure();