ART: Remove art and art/runtime include_dir directives

Remove some overly broad or unnecessary include directives. Fix up
code.

Test: mmma art
Change-Id: Ic2da319f39102d59566e780f3e15fe007a3c36d6
diff --git a/dexlist/dexlist_test.cc b/dexlist/dexlist_test.cc
index f645f87..ae44848 100644
--- a/dexlist/dexlist_test.cc
+++ b/dexlist/dexlist_test.cc
@@ -21,13 +21,12 @@
 #include <sys/types.h>
 #include <unistd.h>
 
+#include "arch/instruction_set.h"
 #include "common_runtime_test.h"
-#include "runtime/arch/instruction_set.h"
-#include "runtime/exec_utils.h"
-#include "runtime/gc/heap.h"
-#include "runtime/gc/space/image_space.h"
-#include "runtime/os.h"
-#include "runtime/utils.h"
+#include "exec_utils.h"
+#include "gc/heap.h"
+#include "gc/space/image_space.h"
+#include "os.h"
 #include "utils.h"
 
 namespace art {