ima_setup.sh: Some cleanup

* Use 'test.sh'.

* Use 'test_brkm' instead of 'tst_resm TBROK'.

* Use 'tst_tmpdir' and 'tst_rmdir'.

* Delete some useless variable value.

* Delete some unuseful comments.

* Some cleanup.

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