Remove peer_cert from SESS_CERT. It's completely redundant with the copy in the SSL_SESSION except it isn't serialized. Change-Id: I1d95a14cae064c599e4bab576df1dd156da4b81c Reviewed-on: https://boringssl-review.googlesource.com/5757 Reviewed-by: Adam Langley <agl@google.com>