Instruction::clone does not need to take an LLVMContext&. Remove that and
update all the callers.

llvm-svn: 82889
diff --git a/llvm/lib/Transforms/Scalar/TailDuplication.cpp b/llvm/lib/Transforms/Scalar/TailDuplication.cpp
index 8345175..ee45231 100644
--- a/llvm/lib/Transforms/Scalar/TailDuplication.cpp
+++ b/llvm/lib/Transforms/Scalar/TailDuplication.cpp
@@ -306,7 +306,7 @@
   // keeping track of the mapping...
   //
   for (; BI != DestBlock->end(); ++BI) {
-    Instruction *New = BI->clone(BI->getContext());
+    Instruction *New = BI->clone();
     New->setName(BI->getName());
     SourceBlock->getInstList().push_back(New);
     ValueMapping[BI] = New;