More robust dependency filtering

Only remove the MBEDTLS_HAVE_INTnn dependency, not any other dependency that
might be present.

No behavior change, this is just robustness.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
diff --git a/scripts/mbedtls_dev/bignum_mod_raw.py b/scripts/mbedtls_dev/bignum_mod_raw.py
index 21add3b..fa95e24 100644
--- a/scripts/mbedtls_dev/bignum_mod_raw.py
+++ b/scripts/mbedtls_dev/bignum_mod_raw.py
@@ -149,7 +149,9 @@
             # representations, emit a single test case with no dependency
             # on the limb size.
             if rep is not bignum_common.ModulusRepresentation.MONTGOMERY:
-                test_object.dependencies = []
+                test_object.dependencies = \
+                    [dep for dep in test_object.dependencies
+                     if not dep.startswith('MBEDTLS_HAVE_INT')]
             if test_object.is_valid:
                 yield test_object.create_test_case()
             if rep is not bignum_common.ModulusRepresentation.MONTGOMERY: