common: misc: remove now unused errno_str

With all errno_str() instanced removed in a previous commit, we can drop
the now unused definition. New code should use

  printf("message: %m\n");

instead of

  printf("message: %s\n", errno_str());

or just use strerror(...) directly.

Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20221010061122.2084009-4-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

1 files changed, 0 insertions, 1 deletions

diff --git a/include/errno.h b/include/errno.h
index 262c9fc3eb..1644265966 100644
--- a/include/errno.h
+++ b/include/errno.h
@@ -8,7 +8,6 @@
 extern int errno;
 
 void perror(const char *s);
-const char *errno_str(void);
 const char *strerror(int errnum);
 
 #endif /* __ERRNO_H */