Fix traceback when selecting "Project" menu "Launch the terminal block
creation plugin" item:
Traceback (most recent call last):
File "/snap/qelectrotech/1973/bin/qet_tb_generator", line 33, in <module>
sys.exit(load_entry_point('qet-tb-generator==1.3.1', 'console_scripts', 'qet_tb_generator')())
File "/snap/qelectrotech/1973/bin/qet_tb_generator", line 25, in importlib_load_entry_point
return next(matches).load()
File "/usr/lib/python3.10/importlib/metadata/__init__.py", line 171, in load
module = import_module(match.group('module'))
File "/usr/lib/python3.10/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 883, in exec_module
File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
File "/snap/qelectrotech/1973/lib/python3.10/site-packages/src/main.py", line 98, in <module>
import src.PySimpleGUI as sg
File "/snap/qelectrotech/1973/lib/python3.10/site-packages/src/PySimpleGUI.py", line 95, in <module>
import tkinter as tk
ModuleNotFoundError: No module named 'tkinter'
Now that https://github.com/snapcore/snapcraft/pull/3596 has been
released in snapcraft 6.0.1, drop the prompt that tells users to
disconnect the old framework snap.
Also drop --enable-experimental-extensions from CI because kde-neon
has been declared stable for core20.
