libgui: Remove custom BufferQueue allocators

Removes the ability to set a custom GraphicBuffer allocator for a
BufferQueue. Custom-allocated buffers may still be used through the
attachBuffer call.

Change-Id: I127bdfb496fc089a61c7e266c8bd2b906d41f32e
diff --git a/libs/gui/BufferQueue.cpp b/libs/gui/BufferQueue.cpp
index ccbb5a2..61da85f 100644
--- a/libs/gui/BufferQueue.cpp
+++ b/libs/gui/BufferQueue.cpp
@@ -62,14 +62,13 @@
 }
 
 void BufferQueue::createBufferQueue(sp<IGraphicBufferProducer>* outProducer,
-        sp<IGraphicBufferConsumer>* outConsumer,
-        const sp<IGraphicBufferAlloc>& allocator) {
+        sp<IGraphicBufferConsumer>* outConsumer) {
     LOG_ALWAYS_FATAL_IF(outProducer == NULL,
             "BufferQueue: outProducer must not be NULL");
     LOG_ALWAYS_FATAL_IF(outConsumer == NULL,
             "BufferQueue: outConsumer must not be NULL");
 
-    sp<BufferQueueCore> core(new BufferQueueCore(allocator));
+    sp<BufferQueueCore> core(new BufferQueueCore());
     LOG_ALWAYS_FATAL_IF(core == NULL,
             "BufferQueue: failed to create BufferQueueCore");