Removed old test files

src/interfaces/ecpg/test/dt_test.pgc

src/interfaces/ecpg/test/dyntest.pgc

src/interfaces/ecpg/test/dyntest2.pgc

src/interfaces/ecpg/test/num_test.pgc

src/interfaces/ecpg/test/perftest.pgc

src/interfaces/ecpg/test/test1.pgc

src/interfaces/ecpg/test/test2.pgc

src/interfaces/ecpg/test/test3.pgc

src/interfaces/ecpg/test/test4.pgc

src/interfaces/ecpg/test/test5.pgc

src/interfaces/ecpg/test/test_code100.pgc

src/interfaces/ecpg/test/test_desc.pgc

src/interfaces/ecpg/test/test_func.pgc

src/interfaces/ecpg/test/test_informix.pgc

src/interfaces/ecpg/test/test_informix2.pgc

src/interfaces/ecpg/test/test_init.pgc

src/interfaces/ecpg/test/test_notice.pgc

src/interfaces/ecpg/test/test_thread.pgc

src/interfaces/ecpg/test/test_thread_implicit.pgc

src/interfaces/ecpg/test/testdynalloc.pgc