[tests] Remove a few special cases in monotouch-test that no longer apply. (#23985)

Author: rolfbjarne

tests/monotouch-test/AVFoundation/CaptureMetadataOutputTest.cs

@@ -113,12 +113,6 @@ public void MetadataObjectTypesTest ()
 								case AVMetadataObjectType.DogBody:
 								case AVMetadataObjectType.HumanBody:
 								case AVMetadataObjectType.SalientObject:
-									// fail *and crash* on iOS 8 (at least on 32bits devices)
-									if (!TestRuntime.CheckXcodeVersion (11, 0))
-										continue;
-									// xcode 12 beta 1 on device
-									if (TestRuntime.IsDevice && TestRuntime.CheckXcodeVersion (12, 0))
-										continue;
 									break;
 								case AVMetadataObjectType.CodabarCode:
 								case AVMetadataObjectType.GS1DataBarCode:

tests/monotouch-test/Security/KeyTest.cs

@@ -295,9 +295,11 @@ public void RoundtripRSA1024OAEP ()
 		}
 
 		[Test]
-		[Ignore ("crash with Xcode 12")]
 		public void SignVerifyRSAMinPKCS1SHA1 ()
 		{
+			if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
+				Assert.Ignore ("This test raises a SIGFPE signal which ends up killing the process on x64.");
+
 			SecKey private_key;
 			SecKey public_key;
 			var label = $"KeyTest.SignVerifyRSAMinPKCS1SHA1-{CFBundle.GetMain ().Identifier}-{GetType ().FullName}-{Process.GetCurrentProcess ().Id}";