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games/doom: remove dead code

missed from commit e5c7fe6305977d4135d56d2fa6b5b37c8f275679

--- a/sys/src/games/doom/i_sound.c

+++ b/sys/src/games/doom/i_sound.c

@@ -141,7 +141,6 @@

 		fprint(2, "I_InitSound: disabling sound: %r\n");

 		return;

 	}

-	I_InitMusic();

 	/* Initialize external data (all sounds) at start, keep static. */

 	for (i=1 ; i<NUMSFX ; i++)

 	{

@@ -405,23 +404,6 @@

 	if(i == NUM_CHANNELS)

 		return;

 	setparams(slot, vol, sep);

-}

-

-void I_InitMusic(void)

-{

-	int fd, n, sz;

-	char name[64];

-	uchar *gm;

-

-	n = W_GetNumForName("GENMIDI");

-	sz = W_LumpLength(n);

-	gm = (uchar *)W_CacheLumpNum(n, PU_STATIC);

-	snprint(name, sizeof(name), "/tmp/genmidi.%d", getpid());

-	if((fd = create(name, ORDWR|ORCLOSE, 0666)) < 0)

-		sysfatal("create: %r");

-	if(write(fd, gm, sz) != sz)

-			sysfatal("write: %r");

-	Z_Free(gm);

 }

 void I_ShutdownMusic(void)

--- a/sys/src/games/doom/i_sound.h

+++ b/sys/src/games/doom/i_sound.h

@@ -82,7 +82,6 @@

 //

 //  MUSIC I/O

 //

-void I_InitMusic(void);

 void I_ShutdownMusic(void);

 // Volume.

 void I_SetMusicVolume(int volume);