tests: psa: driver: cipher: Remove unnecessary check

Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/tests/src/drivers/test_driver_cipher.c b/tests/src/drivers/test_driver_cipher.c
index 89a7b59..be06b97 100644
--- a/tests/src/drivers/test_driver_cipher.c
+++ b/tests/src/drivers/test_driver_cipher.c
@@ -148,9 +148,6 @@
 {
     mbedtls_test_driver_cipher_hooks.hits++;
 
-    if( operation->alg == 0 )
-        return( PSA_SUCCESS );
-
     mbedtls_transparent_test_driver_cipher_abort( operation );
 
     /* Wiping the entire struct here, instead of member-by-member. This is