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d_init: remove unused stuff

--- a/d_init.c

+++ b/d_init.c

@@ -40,59 +40,6 @@

 	r_aliasuvscale = 1.0;

 }

-

-/*

-===============

-D_CopyRects

-===============

-*/

-void D_CopyRects (vrect_t *prects, int transparent)

-{

-

-// this function is only required if the CPU doesn't have direct access to the

-// back buffer, and there's some driver interface function that the driver

-// doesn't support and requires Quake to do in software (such as drawing the

-// console); Quake will then draw into wherever the driver points vid.buffer

-// and will call this function before swapping buffers

-

-	USED(prects);

-	USED(transparent);

-}

-

-

-/*

-===============

-D_EnableBackBufferAccess

-===============

-*/

-void D_EnableBackBufferAccess (void)

-{

-	VID_LockBuffer ();

-}

-

-

-/*

-===============

-D_TurnZOn

-===============

-*/

-void D_TurnZOn (void)

-{

-// not needed for software version

-}

-

-

-/*

-===============

-D_DisableBackBufferAccess

-===============

-*/

-void D_DisableBackBufferAccess (void)

-{

-	VID_UnlockBuffer ();

-}

-

-

 /*

 ===============

 D_SetupFrame