write_or_die: remove the unused write_or_whine() function

Now the last caller of this function is gone, and new ones are
unlikely to appear, because this function is doing very little that
a regular if() does not besides obfuscating the error message (and
if we ever did want something like it, we would probably prefer the
function to come back with more "normal" return value semantics).

Signed-off-by: Ramsay Jones <ramsay@ramsayjones.plus.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

cache.h

@@ -1715,7 +1715,6 @@ extern int copy_file(const char *dst, const char *src, int mode);
 extern int copy_file_with_time(const char *dst, const char *src, int mode);
 
 extern void write_or_die(int fd, const void *buf, size_t count);
-extern int write_or_whine(int fd, const void *buf, size_t count, const char *msg);
 extern int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg);
 extern void fsync_or_die(int fd, const char *);
 

write_or_die.c

@@ -94,14 +94,3 @@ int write_or_whine_pipe(int fd, const void *buf, size_t count, const char *msg)
 
 	return 1;
 }
-
-int write_or_whine(int fd, const void *buf, size_t count, const char *msg)
-{
-	if (write_in_full(fd, buf, count) < 0) {
-		fprintf(stderr, "%s: write error (%s)\n",
-			msg, strerror(errno));
-		return 0;
-	}
-
-	return 1;
-}