Removing dead code unit tests and BinFmt enablement

[JanKrivanek]

Fixes #8925

Context

Following types serialization is no more facilitated by BinFmt - so removing associated unit tests:

• InvalidProjectFileException - all BuildExceptionBase exceptions tested via TestSerializationOfBuildExceptions; plus InvalidProjectFileException has it's own test: TestInvalidProjectFileException_NestedWithStack
• LoggerException - same as above
• ProjectStartedEventArgs - serialized via translatable only
• AssemblyName_Ex - serialized via translatable only. The edited test file already contained tests for both types of serialization
• CopyOnWriteDictionary - not custom serialized on any codepath (possibly only via TranslateDictionary taking IDictionary)

Changes Made

Appart from removing serialization tests of above mentioned types - removed the EnableUnsafeBinaryFormatterSerialization which was needed just because of those tests

[JanKrivanek]

@rokonec - can you have a look on fail of Build_WithCustomBuildArgs_NetCore?

System.NotSupportedException: BinaryFormatter serialization and deserialization are disabled within this application.

I thought this should have been caught - correct?

[JanKrivanek]

@rokonec - can you have a look on fail of Build_WithCustomBuildArgs_NetCore?

System.NotSupportedException: BinaryFormatter serialization and deserialization are disabled within this application.

I thought this should have been caught - correct?

Discussed offline - this is actually a wrong test (as it explicitly opts out from the checking functionality but do not assert on the BinFmt exception)