deleted m4 files.

Rev: src/testsuite/aes-test.c:1.1
Rev: src/testsuite/arcfour-test.c:1.1
Rev: src/testsuite/blowfish-test.c:1.1
Rev: src/testsuite/cast128-test.c:1.1
Rev: src/testsuite/des-test.c:1.1
Rev: src/testsuite/serpent-test.c:1.1
Rev: src/testsuite/twofish-test.c:1.1