[tests] Adjust an MMP test to handle a fixed warning now that we're building for a higher min OS version.

tests/mmptest/src/CodeStrippingTests.cs

@@ -117,7 +117,7 @@ namespace Xamarin.MMP.Tests {
 				} else {
 					Assert.AreEqual (2, architectures.Count, "libTest.dylib should contain 2+ architectures");
 					Assert.That (architectures, Is.EquivalentTo (new Abi [] { Abi.i386, Abi.x86_64 }), "libTest.dylib should be x86_64 + i386");
-					testResult.Messages.AssertWarningCount (1); // dylib ([...]/xamarin-macios/tests/mmptest/bin/Debug/tmp-test-dir/Xamarin.MMP.Tests.MMPTests.RunMMPTest47/bin/Release/UnifiedExample.app/Contents/MonoBundle/libTest.dylib) was built for newer macOS version (10.11) than being linked (10.9)
+					testResult.Messages.AssertWarningCount (0);
 				}
 			});
 		}