staging: rtl8712: Remove driver using deprecated API wext

commit 41e883c upstream.

This driver is in the staging area since 2010.

The following reasons lead to the removal:
- This driver generates maintenance workload for itself and for API wext
- A MAC80211 driver was available in 2016 time frame; This driver does
  not compile anymore but would be a better starting point than the
  current driver. Here the note from the TODO file:
  A replacement for this driver with MAC80211 support is available
  at https://github.com/chunkeey/rtl8192su
- no progress changing to mac80211
- Using this hardware is security wise not state of the art as WPA3 is
  not supported.

Find further discussions in the Link below.

Link: https://lore.kernel.org/linux-staging/a02e3e0b-8a9b-47d5-87cf-2c957a474daa@gmail.com/T/#t
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Tested-by: Dominik Karol Piątkowski <dominik.karol.piatkowski@protonmail.com>
Link: https://lore.kernel.org/r/20241020144933.10956-1-philipp.g.hortmann@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[groeck: Resolved conflicts; dropped statement about hardware support in longterm kernels]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/stable/20251204021604.GA843400@ax162/T/#t
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: Philipp Hortmann

MAINTAINERS

@@ -20390,12 +20390,6 @@ S:	Maintained
 W:	http://wiki.laptop.org/go/DCON
 F:	drivers/staging/olpc_dcon/
 
-STAGING - REALTEK RTL8712U DRIVERS
-M:	Larry Finger <Larry.Finger@lwfinger.net>
-M:	Florian Schilhabel <florian.c.schilhabel@googlemail.com>.
-S:	Odd Fixes
-F:	drivers/staging/rtl8712/
-
 STAGING - SEPS525 LCD CONTROLLER DRIVERS
 M:	Michael Hennerich <michael.hennerich@analog.com>
 L:	linux-fbdev@vger.kernel.org

drivers/staging/Kconfig

@@ -34,8 +34,6 @@ source "drivers/staging/rtl8192e/Kconfig"
 
 source "drivers/staging/rtl8723bs/Kconfig"
 
-source "drivers/staging/rtl8712/Kconfig"
-
 source "drivers/staging/rts5208/Kconfig"
 
 source "drivers/staging/octeon/Kconfig"

drivers/staging/Makefile

@@ -7,7 +7,6 @@ obj-$(CONFIG_FB_OLPC_DCON)	+= olpc_dcon/
 obj-$(CONFIG_RTL8192U)		+= rtl8192u/
 obj-$(CONFIG_RTL8192E)		+= rtl8192e/
 obj-$(CONFIG_RTL8723BS)		+= rtl8723bs/
-obj-$(CONFIG_R8712U)		+= rtl8712/
 obj-$(CONFIG_RTS5208)		+= rts5208/
 obj-$(CONFIG_OCTEON_ETHERNET)	+= octeon/
 obj-$(CONFIG_VT6655)		+= vt6655/