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libthread: remove unused _times() function

--- a/sys/src/libthread/main.c

+++ b/sys/src/libthread/main.c

@@ -69,38 +69,6 @@

 	return p;

 }

-static long

-_times(long *t)

-{

-	char b[200], *p;

-	int f;

-	ulong r;

-

-	memset(b, 0, sizeof(b));

-	f = open("/dev/cputime", OREAD|OCEXEC);

-	if(f < 0)

-		return 0;

-	if(read(f, b, sizeof(b)) <= 0){

-		close(f);

-		return 0;

-	}

-	p = b;

-	if(t)

-		t[0] = atol(p);

-	p = skip(p);

-	if(t)

-		t[1] = atol(p);

-	p = skip(p);

-	r = atol(p);

-	if(t){

-		p = skip(p);

-		t[2] = atol(p);

-		p = skip(p);

-		t[3] = atol(p);

-	}

-	return r;

-}

-

 static void

 efork(Execargs *e)

 {

-- 

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