remove chertificate expiration test for old Thunderbird versions

Those are not supported anymore, and they will not get any future
updates, so they will always have an expired signing certifiacte.

updater-test/software/Thunderbird78_Tests.cs

@@ -1,6 +1,6 @@
 /*
     This file is part of the updater command line interface.
-    Copyright (C) 2017, 2021, 2022  Dirk Stolle
+    Copyright (C) 2017, 2021, 2022, 2024  Dirk Stolle
 
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -56,7 +56,25 @@ public void Test_info()
             var languages = Thunderbird78.validLanguageCodes();
             foreach (var languageCode in languages)
             {
-                _info(new Thunderbird78(languageCode, false));
+                var sw = new Thunderbird78(languageCode, false);
+                Assert.IsNotNull(sw);
+                var info = sw.info();
+                Assert.IsNotNull(info);
+                // name must be set
+                Assert.IsFalse(string.IsNullOrWhiteSpace(info.Name));
+                // at least one installation information instance should be present
+                Assert.IsTrue((info.install32Bit != null) || (info.install64Bit != null));
+                // at least one regex should be present
+                Assert.IsTrue(!string.IsNullOrWhiteSpace(info.match32Bit) || !string.IsNullOrWhiteSpace(info.match64Bit));
+                // 32-bit information should match
+                Assert.AreEqual<bool>(info.install32Bit != null, !string.IsNullOrWhiteSpace(info.match32Bit));
+                // 64-bit information should match
+                Assert.AreEqual<bool>(info.install64Bit != null, !string.IsNullOrWhiteSpace(info.match64Bit));
+                // checksums should always be present, or at least a signature for verification
+                if (null != info.install32Bit)
+                    Assert.IsTrue(info.install32Bit.hasChecksum() || info.install32Bit.hasVerifiableSignature());
+                if (null != info.install64Bit)
+                    Assert.IsTrue(info.install64Bit.hasChecksum() || info.install64Bit.hasVerifiableSignature());
             }
         }