deleted unit_testing folder and moved materials to testing_debugging_part1

diff --git a/unit_testing/PresenterNotes.ipynb b/testing_debugging_part1/PresenterNotes.ipynb
similarity index 100%
rename from unit_testing/PresenterNotes.ipynb
rename to testing_debugging_part1/PresenterNotes.ipynb

diff --git a/unit_testing/test.txt b/testing_debugging_part1/test.txt
similarity index 100%
rename from unit_testing/test.txt
rename to testing_debugging_part1/test.txt

diff --git a/unit_testing/traceback_example.py b/testing_debugging_part1/traceback_example.py
similarity index 100%
rename from unit_testing/traceback_example.py
rename to testing_debugging_part1/traceback_example.py