display: Remove framebuffer HAL usage

This patch removes the usage of the framebuffer HAL which is
deprecated in JB MR1 onwards. The code is left for compatibility
such as conformance tests but it is unused for normal display
usage.

Change-Id: If98133bdaa759cdc41d4503ff695b225ee43cb6f

Conflicts:

	libhwcomposer/hwc_utils.cpp
diff --git a/libgralloc/gpu.h b/libgralloc/gpu.h
index 2986984..6826ffe 100644
--- a/libgralloc/gpu.h
+++ b/libgralloc/gpu.h
@@ -27,7 +27,7 @@
 #include <cutils/ashmem.h>
 
 #include "gralloc_priv.h"
-#include <fb_priv.h>
+#include "fb_priv.h"
 
 namespace gralloc {
 class IAllocController;
@@ -36,12 +36,6 @@
     gpu_context_t(const private_module_t* module,
                   IAllocController* alloc_ctrl);
 
-    int gralloc_alloc_framebuffer_locked(size_t size, int usage,
-                                         buffer_handle_t* pHandle);
-
-    int gralloc_alloc_framebuffer(size_t size, int usage,
-                                  buffer_handle_t* pHandle);
-
     int gralloc_alloc_buffer(size_t size, int usage,
                              buffer_handle_t* pHandle,
                              int bufferType, int format,