Removed obsolete serialization tests.

...est/java/org/orekit/attitudes/TabulatedLofOffsetTest.java

...test/java/org/orekit/attitudes/TabulatedProviderTest.java

.../propagation/events/EventEnablingPredicateFilterTest.java

...t/java/org/orekit/propagation/events/FieldOfViewTest.java

...ekit/propagation/events/FootprintOverlapDetectorTest.java

...orekit/propagation/events/GeographicZoneDetectorTest.java

...ekit/propagation/integration/IntegratedEphemerisTest.java