Remove logic for non-signing client certificates.

Now that only RSA and ECDSA certificates are supported, the server should just
reject non-signing ones outright, rather than allowing them to skip
CertificateVerify.

Change-Id: I7fe5ed3adde14481016ee841ed241faba18c26f0
Reviewed-on: https://boringssl-review.googlesource.com/1609
Reviewed-by: Adam Langley <agl@google.com>
1 file changed