[RemoveAddrspaces] make MappedTypes non-static (#44453)

(cherry picked from commit 610fc20)

Author: vchuravy

src/llvm-remove-addrspaces.cpp

@@ -112,10 +112,9 @@ class AddrspaceRemoveTypeRemapper : public ValueMapTypeRemapper {
     }
 
 private:
-    static DenseMap<Type *, Type *> MappedTypes;
+    DenseMap<Type *, Type *> MappedTypes;
 };
 
-DenseMap<Type *, Type *> AddrspaceRemoveTypeRemapper::MappedTypes;
 
 class AddrspaceRemoveValueMaterializer : public ValueMaterializer {
     ValueToValueMapTy &VM;