Input: ixp4xx-beeper - delete driver

The NSLU2 has been migrated to devicetree and there we use
the gpio-beeper.c driver instead, the boardfile will be deleted
for kernel v5.15 so drop this custom and now unneeded driver.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210714115028.916360-1-linus.walleij@linaro.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/misc/Kconfig

@@ -309,18 +309,6 @@ config INPUT_GPIO_VIBRA
 	  To compile this driver as a module, choose M here: the module will be
 	  called gpio-vibra.
 
-config INPUT_IXP4XX_BEEPER
-	tristate "IXP4XX Beeper support"
-	depends on ARCH_IXP4XX
-	help
-	  If you say yes here, you can connect a beeper to the
-	  ixp4xx gpio pins. This is used by the LinkSys NSLU2.
-
-	  If unsure, say Y.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called ixp4xx-beeper.
-
 config INPUT_COBALT_BTNS
 	tristate "Cobalt button interface"
 	depends on MIPS_COBALT

drivers/input/misc/Makefile

@@ -44,7 +44,6 @@ obj-$(CONFIG_HP_SDC_RTC)		+= hp_sdc_rtc.o
 obj-$(CONFIG_INPUT_IMS_PCU)		+= ims-pcu.o
 obj-$(CONFIG_INPUT_IQS269A)		+= iqs269a.o
 obj-$(CONFIG_INPUT_IQS626A)		+= iqs626a.o
-obj-$(CONFIG_INPUT_IXP4XX_BEEPER)	+= ixp4xx-beeper.o
 obj-$(CONFIG_INPUT_KEYSPAN_REMOTE)	+= keyspan_remote.o
 obj-$(CONFIG_INPUT_KXTJ9)		+= kxtj9.o
 obj-$(CONFIG_INPUT_M68K_BEEP)		+= m68kspkr.o