Remove unused inclusion of SymbolTable.h

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25170 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Analysis/IPA/FindUsedTypes.cpp

@@ -17,7 +17,6 @@
 #include "llvm/Constants.h"
 #include "llvm/DerivedTypes.h"
 #include "llvm/Module.h"
-#include "llvm/SymbolTable.h"
 #include "llvm/Assembly/CachedWriter.h"
 #include "llvm/Support/InstIterator.h"
 using namespace llvm;