Revert "Modify gralloc0 implementation"

This reverts commit 160cbda3b535beb482e1b97cf29745c5cb029c5b.

Reason for revert: breaks pi-gce-dev. Merged over THfailure

Change-Id: I03d5ed7f42dd96822f290498effa5fbe80748b8a
diff --git a/guest/hals/gralloc/gralloc.cpp b/guest/hals/gralloc/gralloc.cpp
index 53ceaf1..e5e0c5d 100644
--- a/guest/hals/gralloc/gralloc.cpp
+++ b/guest/hals/gralloc/gralloc.cpp
@@ -318,7 +318,5 @@
     .unlock = unlock,
     .lock_ycbcr = lock_ycbcr,
     .perform = NULL,
-    .validateBufferSize = NULL,
-    .getTransportSize = NULL,
   },
 };
diff --git a/guest/hals/gralloc/legacy/gralloc.cpp b/guest/hals/gralloc/legacy/gralloc.cpp
index cdb03b0..f890932 100644
--- a/guest/hals/gralloc/legacy/gralloc.cpp
+++ b/guest/hals/gralloc/legacy/gralloc.cpp
@@ -195,8 +195,6 @@
     VSOC_STATIC_INITIALIZER(unregisterBuffer) gralloc_unregister_buffer,
     VSOC_STATIC_INITIALIZER(lock) gralloc_lock,
     VSOC_STATIC_INITIALIZER(unlock) gralloc_unlock,
-    VSOC_STATIC_INITIALIZER(validateBufferSize) NULL,
-    VSOC_STATIC_INITIALIZER(getTransportSize) NULL,
 #ifdef GRALLOC_MODULE_API_VERSION_0_2
     VSOC_STATIC_INITIALIZER(perform) NULL,
     VSOC_STATIC_INITIALIZER(lock_ycbcr) gralloc_lock_ycbcr,