Remove channel binding requirement from clientcert=verify-full test.

This fails on older OpenSSL versions that lack channel binding
support.  Since that feature is not essential to this test case,
just remove it, instead of complicating matters.  Per buildfarm.

Jacob Champion

Discussion: https://postgr.es/m/fa8dbbb58c20b1d1adf0082769f80d5466eaf485.camel@vmware.com

src/test/ssl/t/002_scram.pl

@@ -104,8 +104,8 @@ $node->connect_fails(
 
 # Certificate verification at the connection level should still work fine.
 $node->connect_ok(
-	"sslcert=ssl/client.crt sslkey=$client_tmp_key sslrootcert=invalid hostaddr=$SERVERHOSTADDR dbname=verifydb user=ssltestuser channel_binding=require",
-	"SCRAM with clientcert=verify-full and channel_binding=require",
+	"sslcert=ssl/client.crt sslkey=$client_tmp_key sslrootcert=invalid hostaddr=$SERVERHOSTADDR dbname=verifydb user=ssltestuser",
+	"SCRAM with clientcert=verify-full",
 	log_like => [
 		qr/connection authenticated: identity="ssltestuser" method=scram-sha-256/
 	]);