Fix buggy test "smb_test_lx_z001_detect"

The test is failing as the file does not exist, however, the test passes

[103]_z001_smb z001_smb detect new smb
grep: i2c_bus_list_test.log: No such file or directory
/home/dua/workspace/MDIS_Test/MDIS_Functional/mdis_test_system/Target/Ip_Core_Tests/z001_smb.sh: line 99: -z: command not found
[103] Test_Result for Test_x_103_z001_smb_1_Test_Case: SUCCESS