gnu: xf86-video-tdfx: Update to 1.4.6.

* gnu/packages/patches/xf86-video-tdfx-remove-mibstore.patch: Delete
  file.
* gnu-system.am (dist_patch_DATA): Remove it.
* gnu/packages/xorg.scm (xf86-video-tdfx): Update to 1.4.6.
  [source]: Remove patch.

gnu-system.am

@@ -773,7 +773,6 @@ dist_patch_DATA =						\
   gnu/packages/patches/xf86-video-mach64-glibc-2.20.patch	\
   gnu/packages/patches/xf86-video-nv-remove-mibstore.patch	\
   gnu/packages/patches/xf86-video-openchrome-glibc-2.20.patch	\
-  gnu/packages/patches/xf86-video-tdfx-remove-mibstore.patch	\
   gnu/packages/patches/xf86-video-tga-remove-mibstore.patch	\
   gnu/packages/patches/xf86-video-trident-remove-mibstore.patch	\
   gnu/packages/patches/xf86-video-vmware-glibc-2.20.patch	\

gnu/packages/patches/xf86-video-tdfx-remove-mibstore.patch

@@ -1,26 +0,0 @@
-Removes references to mibstore.h and miInitializeBackingStore, which
-have been removed from xorg-server.  Zack Rusin <zackr@vmware.com>
-wrote: "It was a noop for at least 5 years and it has been removed."
-See: http://patches.openembedded.org/patch/46133/
-
---- xf86-video-tdfx-1.4.5/src/tdfx_driver.c.~1~	2012-07-17 01:21:16.000000000 -0400
-+++ xf86-video-tdfx-1.4.5/src/tdfx_driver.c	2014-12-19 01:36:42.762798424 -0500
-@@ -62,10 +62,6 @@
- 
- #include "compiler.h"
- 
--/* Drivers using the mi implementation of backing store need: */
--
--#include "mibstore.h"
--
- /* All drivers using the vgahw module need this */
- /* This driver needs to be modified to not use vgaHW for multihead operation */
- #include "vgaHW.h"
-@@ -2373,7 +2369,6 @@
-     }
-   }
- 
--  miInitializeBackingStore(pScreen);
-   xf86SetBackingStore(pScreen);
-   xf86SetSilkenMouse(pScreen);
- 

gnu/packages/xorg.scm

@@ -3234,7 +3234,7 @@ This driver supports SiS chipsets of 300/315/330/340 series.")
 (define-public xf86-video-tdfx
   (package
     (name "xf86-video-tdfx")
-    (version "1.4.5")
+    (version "1.4.6")
     (source
       (origin
         (method url-fetch)
@@ -3244,9 +3244,7 @@ This driver supports SiS chipsets of 300/315/330/340 series.")
                ".tar.bz2"))
         (sha256
           (base32
-           "0nfqf1c8939s21ci1g7gacwzlr4g4nnilahgz7j2bz30zfnzpmbh"))
-        (patches (list
-                  (search-patch "xf86-video-tdfx-remove-mibstore.patch")))))
+           "0dvdrhyn1iv6rr85v1c52s1gl0j1qrxgv7x0r7qn3ba0gj38i2is"))))
     (build-system gnu-build-system)
     (inputs `(("mesa" ,mesa)
               ("xf86driproto" ,xf86driproto)