Fix duplicate 'const' warnings

Since the typedef of asn_INTEGER_specifics_t also contains a const the
compiler complained about:
"warning: duplicate ‘const’ [-Wpedantic]"
diff --git a/tests/66-ref-simple-OK.asn1.-Pfwide-types b/tests/66-ref-simple-OK.asn1.-Pfwide-types
index c15eae2..6f2d8a2 100644
--- a/tests/66-ref-simple-OK.asn1.-Pfwide-types
+++ b/tests/66-ref-simple-OK.asn1.-Pfwide-types
@@ -180,7 +180,7 @@
 	2,	/* three(2) */
 	1	/* two(1) */
 };
-static const asn_INTEGER_specifics_t asn_SPC_SimpleType_specs_1 = {
+static asn_INTEGER_specifics_t asn_SPC_SimpleType_specs_1 = {
 	asn_MAP_SimpleType_value2enum_1,	/* "tag" => N; sorted by tag */
 	asn_MAP_SimpleType_enum2value_1,	/* N => "tag"; sorted by N */
 	3,	/* Number of elements in the maps */