Update Semantic test copyrights, delete some test files (Bug#4656).

Update Semantic test copyrights, delete some test files (Bug#4656).

* cedet/tests/test.cpp:
* cedet/tests/test.py:
* cedet/tests/teststruct.cpp:
* cedet/tests/testtemplates.cpp:
* cedet/tests/testusing.cpp:
* cedet/tests/scopetest.cpp:
* cedet/tests/scopetest.java: Files deleted.

* cedet/tests/test.make:
* cedet/tests/test.c:
* cedet/tests/testjavacomp.java:
* cedet/tests/testspp.c:
* cedet/tests/testsppreplace.c:
* cedet/tests/testsppreplaced.c:
* cedet/tests/testsubclass.cpp:
* cedet/tests/testsubclass.hh:
* cedet/tests/testtypedefs.cpp:
* cedet/tests/testvarnames.c:
* cedet/tests/test.el:
* cedet/tests/testdoublens.cpp:
* cedet/tests/testdoublens.hpp: Add copyright header.

* cedet/semantic-tests.el (semanticdb-test-gnu-global): Remove
reference to deleted files.