removed some old qt5 references and other small fixes

.gitlab-ci.yml

b_asic/gui_utils/mpl_window.py

b_asic/logger.py

b_asic/schedule.py

b_asic/scheduler.py

b_asic/scheduler_gui/compile.py

b_asic/scheduler_gui/main_window.py

b_asic/scheduler_gui/scheduler_event.py

b_asic/scheduler_gui/scheduler_item.py

docs_sphinx/conf.py

docs_sphinx/index.rst

test/unit/test_schedule.py