staging: remove ashmem

The mainline replacement for ashmem is memfd, so remove the legacy
code from drivers/staging/

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220315123457.2354812-1-hch@lst.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Christoph Hellwig

drivers/staging/Kconfig

@@ -58,8 +58,6 @@ source "drivers/staging/nvec/Kconfig"
 
 source "drivers/staging/media/Kconfig"
 
-source "drivers/staging/android/Kconfig"
-
 source "drivers/staging/board/Kconfig"
 
 source "drivers/staging/gdm724x/Kconfig"

drivers/staging/Makefile

@@ -19,7 +19,6 @@ obj-$(CONFIG_IIO)		+= iio/
 obj-$(CONFIG_FB_SM750)		+= sm750fb/
 obj-$(CONFIG_USB_EMXX)		+= emxx_udc/
 obj-$(CONFIG_MFD_NVEC)		+= nvec/
-obj-$(CONFIG_ANDROID)		+= android/
 obj-$(CONFIG_STAGING_BOARD)	+= board/
 obj-$(CONFIG_LTE_GDM724X)	+= gdm724x/
 obj-$(CONFIG_FIREWIRE_SERIAL)	+= fwserial/