staging: android: ion: Remove file ion_chunk_heap.c

Remove file ion_chunk_heap.c as its functions and definitions are not
used anywhere else.
Issue found with Coccinelle.

Signed-off-by: Nishka Dasgupta <nishkadg.linux@gmail.com>
Acked-by: Laura Abbott <labbott@redhat.com>
Link: https://lore.kernel.org/r/20190703081842.22872-2-nishkadg.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/android/ion/Kconfig

@@ -18,15 +18,6 @@ config ION_SYSTEM_HEAP
 	  Choose this option to enable the Ion system heap. The system heap
 	  is backed by pages from the buddy allocator. If in doubt, say Y.
 
-config ION_CHUNK_HEAP
-	bool "Ion chunk heap support"
-	depends on ION
-	help
-          Choose this option to enable chunk heaps with Ion. This heap is
-	  similar in function the carveout heap but memory is broken down
-	  into smaller chunk sizes, typically corresponding to a TLB size.
-	  Unless you know your system has these regions, you should say N here.
-
 config ION_CMA_HEAP
 	bool "Ion CMA heap support"
 	depends on ION && DMA_CMA

drivers/staging/android/ion/Makefile

@@ -1,5 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0
 obj-$(CONFIG_ION) += ion.o ion_heap.o
 obj-$(CONFIG_ION_SYSTEM_HEAP) += ion_system_heap.o ion_page_pool.o
-obj-$(CONFIG_ION_CHUNK_HEAP) += ion_chunk_heap.o
 obj-$(CONFIG_ION_CMA_HEAP) += ion_cma_heap.o