runner: Remove unused field

Change-Id: Id6440b3e2feea0539ac83ee697c9e5aee0709fbd
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/46664
Reviewed-by: Adam Langley <agl@google.com>

ssl/test/runner/handshake_client.go

diff --git a/ssl/test/runner/handshake_client.go b/ssl/test/runner/handshake_client.go
index 962737a..774b093 100644
--- a/ssl/test/runner/handshake_client.go
+++ b/ssl/test/runner/handshake_client.go
@@ -34,7 +34,6 @@
 	session       *ClientSessionState
 	finishedBytes []byte
 	peerPublicKey crypto.PublicKey
-	skxAlgo       signatureAlgorithm
 }
 
 func mapClientHelloVersion(vers uint16, isDTLS bool) uint16 {
@@ -1541,8 +1540,6 @@
 	if dc != nil {
 		// Note that this doesn't check a) the delegated credential temporal
 		// validity nor b) that the certificate has the special OID asserted.
-		hs.skxAlgo = dc.expectedCertVerifyAlgo
-
 		var err error
 		if hs.peerPublicKey, err = x509.ParsePKIXPublicKey(dc.pkixPublicKey); err != nil {
 			c.sendAlert(alertBadCertificate)