memstick: rtsx_pci_ms: Remove Realtek PCI memstick driver

Commit c0e5f4e73a ("misc: rtsx: Add support for RTS5261") silently
removed RTSX_MS_CARD from its MFD cell, so rtsx_pci_ms isn't used
by any driver anymore.

Since there doesn't seem to any complaint, hence drop the driver.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Link: https://lore.kernel.org/r/20240620031159.142637-1-kai.heng.feng@canonical.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

drivers/memstick/host/Kconfig

@@ -44,16 +44,6 @@ config MEMSTICK_R592
 	  To compile this driver as a module, choose M here: the module will
 	  be called r592.
 
-config MEMSTICK_REALTEK_PCI
-	tristate "Realtek PCI-E Memstick Card Interface Driver"
-	depends on MISC_RTSX_PCI
-	help
-	  Say Y here to include driver code to support Memstick card interface
-	  of Realtek PCI-E card reader
-
-	  To compile this driver as a module, choose M here: the module will
-	  be called rtsx_pci_ms.
-
 config MEMSTICK_REALTEK_USB
 	tristate "Realtek USB Memstick Card Interface Driver"
 	depends on MISC_RTSX_USB

drivers/memstick/host/Makefile

@@ -6,5 +6,4 @@
 obj-$(CONFIG_MEMSTICK_TIFM_MS)		+= tifm_ms.o
 obj-$(CONFIG_MEMSTICK_JMICRON_38X)	+= jmb38x_ms.o
 obj-$(CONFIG_MEMSTICK_R592)		+= r592.o
-obj-$(CONFIG_MEMSTICK_REALTEK_PCI)	+= rtsx_pci_ms.o
 obj-$(CONFIG_MEMSTICK_REALTEK_USB)	+= rtsx_usb_ms.o