Remove unused _text_widgets #275

Job	Run time
tests-docker (py-qt5, archlinux-webkit)	13m 22s
codeql	3m 11s
tests-docker (py-qt5, archlinux-webengine)	16m 51s
tests (py38-pyqt5152, ubuntu-20.04, 3.8)	9m 50s
linters (pylint)	2m 39s
tests (py311-pyqt515, ubuntu-20.04, 3.11)	16m 2s
tests-docker (py-qt5, archlinux-webengine-unstable)	16m 56s
linters (flake8)	32s
tests (py38-pyqt62, ubuntu-20.04, 3.8)	10m 13s
linters (mypy-pyqt6)	45s
tests (py38-pyqt63, ubuntu-20.04, 3.8)	9m 55s
tests-docker (py, archlinux-webengine-qt6)	16m 2s
linters (mypy-pyqt5)	40s
tests (py39-pyqt64, ubuntu-20.04, 3.9)	9m 58s
tests-docker (py, archlinux-webengine-unstable-qt6)	16m 19s
tests (py310-pyqt65, ubuntu-22.04, 3.10)	16m 18s
linters (docs)	38s
tests (py311-pyqt66, ubuntu-22.04, 3.11)	15m 57s
linters (vulture)	30s
tests (py312-pyqt66, ubuntu-22.04, 3.12)	17m 0s
linters (misc)	14s
linters (pyroma)	10s
tests (py311-pyqt67, ubuntu-22.04, 3.11)	15m 12s
linters (check-manifest)	15s
tests (py312-pyqt67, ubuntu-22.04, 3.12)	16m 54s
linters (eslint)	19s
tests (py312-pyqt67, macos-12, 3.12, tests/unit)	5m 41s
linters (shellcheck, -f gcc)	14s
tests (py312-pyqt67, macos-13, 3.12, tests/unit)	5m 44s
linters (yamllint)	11s
tests (py312-pyqt67, macos-14, 3.12, tests/unit)	3m 8s
linters (actionlint)	16s
tests (py312-pyqt67, windows-2019, 3.12)	19m 0s
linters (package)	20s
irc	0s
	4h 21m 16s

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