fixing imports

Author: joaosaffran

llvm/lib/Target/SPIRV/SPIRVStructurizer.cpp

@@ -31,7 +31,6 @@
 #include "llvm/Transforms/Utils/Cloning.h"
 #include "llvm/Transforms/Utils/LoopSimplify.h"
 #include "llvm/Transforms/Utils/LowerMemIntrinsics.h"
-#include <memory>
 #include <queue>
 #include <stack>
 #include <unordered_set>