Subzero: Do class definition cleanups for assembler files too.

src/assembler_ia32.cpp

Index: src/assembler_ia32.cpp
diff --git a/src/assembler_ia32.cpp b/src/assembler_ia32.cpp
index 9042cf1b4451c2742463b9de7708433a417a3acf..4d629711f54a7a42610ca517763aab1fea4b06d8 100644
--- a/src/assembler_ia32.cpp
+++ b/src/assembler_ia32.cpp
@@ -26,6 +26,9 @@ namespace Ice {
 namespace x86 {
 
 class DirectCallRelocation : public AssemblerFixup {
+  DirectCallRelocation(const DirectCallRelocation &) = delete;
+  DirectCallRelocation &operator=(const DirectCallRelocation &) = delete;
+
 public:
   static DirectCallRelocation *create(Assembler *Asm, FixupKind Kind,
                                       const ConstantRelocatable *Sym) {