Removed unused variable in cipher test

Signed-off-by: Tuvshinzaya Erdenekhuu <tuvshinzaya.erdenekhuu@arm.com>
diff --git a/tests/suites/test_suite_cipher.function b/tests/suites/test_suite_cipher.function
index 70a07db..37468df 100644
--- a/tests/suites/test_suite_cipher.function
+++ b/tests/suites/test_suite_cipher.function
@@ -313,8 +313,6 @@
     unsigned char valid_buffer[] = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
     int valid_size = sizeof(valid_buffer);
     int valid_bitlen = valid_size * 8;
-    const mbedtls_cipher_info_t *valid_info = mbedtls_cipher_info_from_type(
-        *( mbedtls_cipher_list() ) );
 
     TEST_EQUAL(
         MBEDTLS_ERR_CIPHER_BAD_INPUT_DATA,