Remove the last of BIO_print_errors.

The naming breaks layering, but it seems we're stuck with it. We don't
seem to have bothered making first-party code call it BIO_print_errors
(I found no callers of BIO_print_errors), so let's just leave it at
ERR_print_errors.

Change-Id: Iddc22a6afc2c61d4b94ac555be95079e0f477171
Reviewed-on: https://boringssl-review.googlesource.com/11960
Commit-Queue: David Benjamin <davidben@google.com>
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/include/openssl/bio.h b/include/openssl/bio.h
index 18f9f2a..3c8b97d 100644
--- a/include/openssl/bio.h
+++ b/include/openssl/bio.h
@@ -333,9 +333,9 @@
 OPENSSL_EXPORT int BIO_hexdump(BIO *bio, const uint8_t *data, size_t len,
                                unsigned indent);
 
-/* BIO_print_errors prints the current contents of the error stack to |bio|
+/* ERR_print_errors prints the current contents of the error stack to |bio|
  * using human readable strings where possible. */
-OPENSSL_EXPORT void BIO_print_errors(BIO *bio);
+OPENSSL_EXPORT void ERR_print_errors(BIO *bio);
 
 /* BIO_read_asn1 reads a single ASN.1 object from |bio|. If successful it sets
  * |*out| to be an allocated buffer (that should be freed with |OPENSSL_free|),
@@ -748,9 +748,6 @@
  * on one line. */
 OPENSSL_EXPORT const BIO_METHOD *BIO_f_base64(void);
 
-/* ERR_print_errors is an alias for |BIO_print_errors|. */
-OPENSSL_EXPORT void ERR_print_errors(BIO *bio);
-
 
 /* Private functions */