Remove redundant blank line

Signed-off-by: Paul Elliott <paul.elliott@arm.com>
diff --git a/library/psa_crypto_aead.c b/library/psa_crypto_aead.c
index 9dd40dd..e87cda2 100644
--- a/library/psa_crypto_aead.c
+++ b/library/psa_crypto_aead.c
@@ -444,7 +444,6 @@
     size_t ad_length,
     size_t plaintext_length )
 {
-
 #if defined(MBEDTLS_PSA_BUILTIN_ALG_CCM)
     if( operation->alg == PSA_ALG_CCM )
     {