Remove key exchange based on encryption/decryption

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>
diff --git a/programs/ssl/ssl_client2.c b/programs/ssl/ssl_client2.c
index d5c2a63..6ed073e 100644
--- a/programs/ssl/ssl_client2.c
+++ b/programs/ssl/ssl_client2.c
@@ -348,10 +348,10 @@
 #endif /* MBEDTLS_SSL_EARLY_DATA && MBEDTLS_SSL_PROTO_TLS1_3 */
 
 #define USAGE_KEY_OPAQUE_ALGS \
-    "    key_opaque_algs=%%s  Allowed opaque key algorithms.\n"                      \
+    "    key_opaque_algs=%%s  Allowed opaque key algorithms.\n"                        \
     "                        comma-separated pair of values among the following:\n"    \
     "                        rsa-sign-pkcs1, rsa-sign-pss, rsa-sign-pss-sha256,\n"     \
-    "                        rsa-sign-pss-sha384, rsa-sign-pss-sha512, rsa-decrypt,\n" \
+    "                        rsa-sign-pss-sha384, rsa-sign-pss-sha512,\n"              \
     "                        ecdsa-sign, ecdh, none (only acceptable for\n"            \
     "                        the second value).\n"                                     \