stress_floppy: Cleanup

* Delete 'trace_logic' that is used to debug.

* Use 'test.sh' and 'tst_*'.

* Use 'tst_tmpdir' and 'tst_rmdir'.

* Use '$()' instead of '``'.

* Some cleanup.

Signed-off-by: Zeng Linggang <zenglg.jy@cn.fujitsu.com>
1 file changed