Remove wallet::ParseISO8601DateTime, use ParseISO8601DateTime instead

src/test/fuzz/parse_iso8601.cpp

@@ -0,0 +1,27 @@
+// Copyright (c) 2019-present The Bitcoin Core developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#include <test/fuzz/FuzzedDataProvider.h>
+#include <test/fuzz/fuzz.h>
+#include <util/time.h>
+
+#include <cassert>
+#include <cstdint>
+#include <string>
+#include <vector>
+
+FUZZ_TARGET(parse_iso8601)
+{
+    FuzzedDataProvider fuzzed_data_provider(buffer.data(), buffer.size());
+
+    const int64_t random_time = fuzzed_data_provider.ConsumeIntegral<int32_t>();
+    const std::string random_string = fuzzed_data_provider.ConsumeRemainingBytesAsString();
+
+    const std::string iso8601_datetime = FormatISO8601DateTime(random_time);
+    (void)FormatISO8601Date(random_time);
+    const int64_t parsed_time_1{ParseISO8601DateTime(iso8601_datetime).value()};
+    assert(parsed_time_1 == random_time);
+
+    (void)ParseISO8601DateTime(random_string);
+}