Remove unused srcpos_warn() function

This function has no users, and we can replace it more generally later.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

srcpos.c

@@ -312,23 +312,6 @@ srcpos_error(struct srcpos *pos, char const *fmt, ...)
 	va_end(va);
 }
 
-
-void
-srcpos_warn(struct srcpos *pos, char const *fmt, ...)
-{
-	const char *srcstr;
-	va_list va;
-	va_start(va, fmt);
-
-	srcstr = srcpos_string(pos);
-
-	fprintf(stderr, "Warning: %s ", srcstr);
-	vfprintf(stderr, fmt, va);
-	fprintf(stderr, "\n");
-
-	va_end(va);
-}
-
 void srcpos_set_line(char *f, int l)
 {
 	current_srcfile->name = f;

srcpos.h

@@ -111,8 +111,6 @@ extern void srcpos_verror(struct srcpos *pos, char const *, va_list va)
      __attribute__((format(printf, 2, 0)));
 extern void srcpos_error(struct srcpos *pos, char const *, ...)
      __attribute__((format(printf, 2, 3)));
-extern void srcpos_warn(struct srcpos *pos, char const *, ...)
-     __attribute__((format(printf, 2, 3)));
 
 extern void srcpos_set_line(char *f, int l);