Fix code style issues

Signed-off-by: Gabor Mezei <gabor.mezei@arm.com>

tests/suites/test_suite_bignum_core.function

@@ -1104,7 +1104,6 @@ void mpi_core_mul(char *input_A,
         ASSERT_COMPARE(X, X_bytes, R, X_bytes);
         ASSERT_COMPARE(A, A_bytes, A_orig, A_bytes);
     }
-
     /* 3. X = B * A - result should be correct, A and B unchanged */
     else {
         memset(X, '!', X_bytes);