Removed unused CASTOR tests

tapeserver/test/common/Cglobals_test.c

tapeserver/test/common/Cpool_ext_multiple_pools.c

tapeserver/test/common/Cpool_forevertest.c

tapeserver/test/common/Cpool_multiple_pools.c

tapeserver/test/common/Cpool_test.c

tapeserver/test/common/Cpool_test2.c

tapeserver/test/common/Cpool_test_next_index.c

tapeserver/test/common/Cregexp_test.c

tapeserver/test/common/Cregexp_test.dat

tapeserver/test/common/Cthread_kill.c

tapeserver/test/common/Cthread_tsd.c

tapeserver/test/common/Cthread_using_locks.c

tapeserver/test/common/Cuuid_test.c

tapeserver/test/common/tuxid.c

tapeserver/test/security/Csec_client.c

tapeserver/test/security/Csec_server.c

tapeserver/test/security/notes.txt

tapeserver/test/security/nw.c

tapeserver/test/security/nw.h

tapeserver/test/security/run_client.sh