Remove unnecessary compiler pragma.

With dlmalloc 2.8.6 the compiler pragmas to suppress warnings are not
necessary.
Also fix compiler warning about redefinition of LOG_TAG.

Depends upon: https://android-review.googlesource.com/42351

Change-Id: I50f70be31f4bd994b09083e722759464476c70b3
diff --git a/libpixelflinger/codeflinger/CodeCache.cpp b/libpixelflinger/codeflinger/CodeCache.cpp
index 7688290..f9ae00a 100644
--- a/libpixelflinger/codeflinger/CodeCache.cpp
+++ b/libpixelflinger/codeflinger/CodeCache.cpp
@@ -22,14 +22,14 @@
 #include <unistd.h>
 #include <sys/mman.h>
 
-#include <cutils/log.h>
 #include <cutils/ashmem.h>
 #include <cutils/atomic.h>
+#define LOG_TAG "CodeCache"
+#include <cutils/log.h>
+
 
 #include "codeflinger/CodeCache.h"
 
-#define LOG_TAG "CodeCache"
-
 namespace android {
 
 // ----------------------------------------------------------------------------
@@ -63,12 +63,7 @@
 #define USAGE_ERROR_ACTION(m,p) \
     heap_error("ARGUMENT IS INVALID HEAP ADDRESS", __FUNCTION__, p)
 
-
-#pragma GCC diagnostic ignored "-Wstrict-aliasing"
-#pragma GCC diagnostic ignored "-Wempty-body"
 #include "../../../../bionic/libc/upstream-dlmalloc/malloc.c"
-#pragma GCC diagnostic warning "-Wstrict-aliasing"
-#pragma GCC diagnostic warning "-Wempty-body"
 
 static void heap_error(const char* msg, const char* function, void* p) {
     ALOG(LOG_FATAL, LOG_TAG, "@@@ ABORTING: CODE FLINGER: %s IN %s addr=%p",