BUG: Remove initially available ITK_WRAP_JAVA cmake option

Currently Java WrapITK needs work, an does not build correctly. This
patch removes the option initially available. The option will still
become available after ITK_WRAPPING is enabled.

Change-Id: I8d552555d72d95b5fbf05b87b94527aac1025960
Merge topic 'WrapITKNoEasyJavaOption'

04c9485 BUG: Remove initially available ITK_WRAP_JAVA cmake option