MAINTAINERS: Remove some obsolete drivers info(tdfx, mga, i810, savage, r128, sis)

Commit 399516ab ("MAINTAINERS: Add a bunch of legacy (UMS) DRM drivers")
marked these drivers obsolete 7 years ago.
And the mesa UMD of this drm driver already in deprecated list
in the link: https://docs.mesa3d.org/systems.html
3dfx Glide-->driver/gpu/drm/tdfx
Matrox-->driver/gpu/drm/mga
Intel i810-->driver/gpu/drm/i810
S3 Savage-->drivers/gpu/drm/savage
ATI Rage 128->drivers/gpu/drm/r128
Silicon Integrated Systems->drivers/gpu/drm/sis

It's time to remove these drivers.
Signed-off-by: Cai Huoqing <cai.huoqing@linux.dev>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20221203102502.3185-11-cai.huoqing@linux.dev

MAINTAINERS

@@ -6509,11 +6509,6 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
 F:	Documentation/devicetree/bindings/display/ilitek,ili9486.yaml
 F:	drivers/gpu/drm/tiny/ili9486.c
 
-DRM DRIVER FOR INTEL I810 VIDEO CARDS
-S:	Orphan / Obsolete
-F:	drivers/gpu/drm/i810/
-F:	include/uapi/drm/i810_drm.h
-
 DRM DRIVER FOR JADARD JD9365DA-H3 MIPI-DSI LCD PANELS
 M:	Jagan Teki <jagan@edgeble.ai>
 S:	Maintained
@@ -6542,11 +6537,6 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/display/panel/mantix,mlaf057we51-x.yaml
 F:	drivers/gpu/drm/panel/panel-mantix-mlaf057we51.c
 
-DRM DRIVER FOR MATROX G200/G400 GRAPHICS CARDS
-S:	Orphan / Obsolete
-F:	drivers/gpu/drm/mga/
-F:	include/uapi/drm/mga_drm.h
-
 DRM DRIVER FOR MGA G200 GRAPHICS CHIPS
 M:	Dave Airlie <airlied@redhat.com>
 R:	Thomas Zimmermann <tzimmermann@suse.de>
@@ -6665,11 +6655,6 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
 F:	drivers/gpu/drm/qxl/
 F:	include/uapi/drm/qxl_drm.h
 
-DRM DRIVER FOR RAGE 128 VIDEO CARDS
-S:	Orphan / Obsolete
-F:	drivers/gpu/drm/r128/
-F:	include/uapi/drm/r128_drm.h
-
 DRM DRIVER FOR RAYDIUM RM67191 PANELS
 M:	Robert Chiras <robert.chiras@nxp.com>
 S:	Maintained
@@ -6697,11 +6682,6 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/display/panel/rocktech,jh057n00900.yaml
 F:	drivers/gpu/drm/panel/panel-sitronix-st7703.c
 
-DRM DRIVER FOR SAVAGE VIDEO CARDS
-S:	Orphan / Obsolete
-F:	drivers/gpu/drm/savage/
-F:	include/uapi/drm/savage_drm.h
-
 DRM DRIVER FOR FIRMWARE FRAMEBUFFERS
 M:	Thomas Zimmermann <tzimmermann@suse.de>
 M:	Javier Martinez Canillas <javierm@redhat.com>
@@ -6717,11 +6697,6 @@ F:	include/drm/drm_aperture.h
 F:	include/linux/aperture.h
 F:	include/video/nomodeset.h
 
-DRM DRIVER FOR SIS VIDEO CARDS
-S:	Orphan / Obsolete
-F:	drivers/gpu/drm/sis/
-F:	include/uapi/drm/sis_drm.h
-
 DRM DRIVER FOR SITRONIX ST7586 PANELS
 M:	David Lechner <david@lechnology.com>
 S:	Maintained
@@ -6749,10 +6724,6 @@ T:	git git://anongit.freedesktop.org/drm/drm-misc
 F:	Documentation/devicetree/bindings/display/ste,mcde.yaml
 F:	drivers/gpu/drm/mcde/
 
-DRM DRIVER FOR TDFX VIDEO CARDS
-S:	Orphan / Obsolete
-F:	drivers/gpu/drm/tdfx/
-
 DRM DRIVER FOR TI DLPC3433 MIPI DSI TO DMD BRIDGE
 M:	Jagan Teki <jagan@amarulasolutions.com>
 S:	Maintained