Remove Java annotation that could cause issue on Java 1.5

Examples/Infovis/Java/Focus.java

Examples/Infovis/Java/TreeViews.java

Wrapping/Java/vtk/sample/Demo.java

Wrapping/Java/vtk/sample/ImagePlaneWidget.java

Wrapping/Java/vtk/sample/InternalFrames.java

Wrapping/Java/vtk/sample/ReleaseVtkPanel.java

Wrapping/Java/vtk/sample/SimpleVTK.java

Wrapping/Java/vtk/test/ConcurrencyGC.java

Wrapping/Java/vtk/vtkJavaTesting.java

Wrapping/Java/vtk/vtkReferenceInformation.java