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-trident-1.3.6/src/trident_driver.c.~1~	2012-07-15 22:16:00.000000000 -0400
+++ xf86-video-trident-1.3.6/src/trident_driver.c	2014-12-19 01:45:29.529410518 -0500
@@ -56,7 +56,6 @@
 
 #include "mipointer.h"
 
-#include "mibstore.h"
 #include "shadow.h"
 #include "trident.h"
 #include "trident_regs.h"
@@ -3037,7 +3036,6 @@
     	TridentAccelInit(pScreen);
     }
 
-    miInitializeBackingStore(pScreen);
     xf86SetBackingStore(pScreen);
 
     /* Initialise cursor functions */
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<tr><td><span title='2021-12-13 17:48:25 +0100'>2021-12-13</span></td><td><a href='/guix/commit/gnu/packages/sml.scm?id=8394619baceb118df92e355377fd543bb1aa501a'>gnu: Simplify package inputs.</a><span class='msg-avail'>...<span class='msg-tooltip'>This commit was obtained by running:

  ./pre-inst-env guix style

without any additional argument.
</span></span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2021-12-10 15:32:45 +0100'>2021-12-10</span></td><td><a href='/guix/commit/gnu/packages/sml.scm?id=f0adb870ac0ea70bf6fb7a68f8782833017342cd'>gnu: Add smlnj.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/sml.scm (smlnj): New variable.

Co-authored-by: Brett Gilio &lt;brettg@gnu.org&gt;
Signed-off-by: Ludovic Courtès &lt;ludo@gnu.org&gt;
</span></span></td><td>Foo Chuan Wei</td></tr>