Remove CodeItem accessor functions

These are replaced by the accessor helpers.

Bug: 63756964
Test: test-art-host
Test: test/testrunner/testrunner.py --host -j30

Change-Id: Ic93d60b68b684eeb5f69be286b4e15b8f8f97542
diff --git a/compiler/driver/dex_compilation_unit.cc b/compiler/driver/dex_compilation_unit.cc
index 7e8e812..76e1299 100644
--- a/compiler/driver/dex_compilation_unit.cc
+++ b/compiler/driver/dex_compilation_unit.cc
@@ -16,6 +16,7 @@
 
 #include "dex_compilation_unit.h"
 
+#include "code_item_accessors-inl.h"
 #include "mirror/dex_cache.h"
 #include "utils.h"
 
@@ -38,7 +39,8 @@
       dex_method_idx_(method_idx),
       access_flags_(access_flags),
       verified_method_(verified_method),
-      dex_cache_(dex_cache) {
+      dex_cache_(dex_cache),
+      code_item_accessor_(&dex_file, code_item) {
 }
 
 const std::string& DexCompilationUnit::GetSymbol() {