Remove negative check for a message that no longer exists

The message was removed in 6be9cf542f3e5763371a347d199c6db6bdd96d06 without
a replacement. A failure would cause the test case to fail anyway, so this
negative check is not really useful.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 64e6cad..2783aa2 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -1280,8 +1280,6 @@
                 -c "calc PSA finished" \
                 -s "PSA calc verify" \
                 -s "calc PSA finished" \
-                -C "Failed to setup PSA-based cipher context"\
-                -S "Failed to setup PSA-based cipher context"\
                 -s "Protocol is TLSv1.2" \
                 -c "Perform PSA-based ECDH computation."\
                 -c "Perform PSA-based computation of digest of ServerKeyExchange" \
@@ -1300,8 +1298,6 @@
                 -c "calc PSA finished" \
                 -s "PSA calc verify" \
                 -s "calc PSA finished" \
-                -C "Failed to setup PSA-based cipher context"\
-                -S "Failed to setup PSA-based cipher context"\
                 -s "Protocol is TLSv1.2" \
                 -c "Perform PSA-based ECDH computation."\
                 -c "Perform PSA-based computation of digest of ServerKeyExchange" \