The dtls1_output_cert_chain function no longer exists so remove it from ssl_locl.h

(Imported from upstream's 789da2c73d875af59b14156b6295aa4bdfc4f424)

Change-Id: Id94877d8d22578e23c63d1f133820a89ceae29ae
Reviewed-on: https://boringssl-review.googlesource.com/2834
Reviewed-by: Adam Langley <agl@google.com>
diff --git a/ssl/ssl_locl.h b/ssl/ssl_locl.h
index b8e77e2..7d02a2d 100644
--- a/ssl/ssl_locl.h
+++ b/ssl/ssl_locl.h
@@ -821,7 +821,6 @@
 
 int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
 int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen);
-unsigned long dtls1_output_cert_chain(SSL *s, CERT_PKEY *cpk);
 int dtls1_read_failed(SSL *s, int code);
 int dtls1_buffer_message(SSL *s, int ccs);
 int dtls1_retransmit_message(SSL *s, unsigned short seq, unsigned long frag_off,