Remove useless force cipher suite

Change-Id: Ib217806b4d44dea11515dd3ee1463d29431d70bb
Signed-off-by: XiaokangQian <xiaokang.qian@arm.com>
diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index b8b377e..a0ddd81 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -12005,7 +12005,7 @@
 requires_config_enabled MBEDTLS_SSL_CLI_C
 run_test    "TLS 1.3, default suite, PSK - openssl" \
             "$O_NEXT_SRV -msg -debug -tls1_3 -psk_identity 0a0b0c -psk 010203 -allow_no_dhe_kex -nocert" \
-            "$P_CLI debug_level=4 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk force_ciphersuite=TLS1-3-AES-128-GCM-SHA256" \
+            "$P_CLI debug_level=4 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk" \
             1 \
             -c "=> write client hello" \
             -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \
@@ -12021,7 +12021,7 @@
 requires_config_enabled MBEDTLS_SSL_CLI_C
 run_test    "TLS 1.3, default suite, PSK - gnutls" \
             "$G_NEXT_SRV -d 4 --priority=NORMAL:-VERS-ALL:+VERS-TLS1.3:+PSK:+CIPHER-ALL:%NO_TICKETS --pskhint=0a0b0c" \
-            "$P_CLI debug_level=4 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk force_ciphersuite=TLS1-3-AES-128-GCM-SHA256" \
+            "$P_CLI debug_level=4 psk=010203 psk_identity=0a0b0c tls13_kex_modes=psk" \
             1 \
             -c "=> write client hello" \
             -c "client hello, adding pre_shared_key extension, omitting PSK binder list" \