Remove Redundancy From Workflow Test Code

[wasciutto]

Analyze the logger code for test_workflows.py, test_confounds_workflows.py, and test_workflow_chains.py and figure out a way to remove redundant code such that it is easier to make new tests.

[wasciutto]

Changing this to simply removing the switch inputs to the tests - they are not needed.

After analyzing the other fixtures, there isn't much to reduce after all.

[wasciutto]

Closed due to lack of necessity here