Remove Pillow stubs

[srittau]

Closes: #11759

[github-actions]

Diff from mypy_primer, showing the effect of this PR on open source code:

scrapy (https://github.com/scrapy/scrapy)
+ scrapy/pipelines/images.py:280: error: Unused "type: ignore" comment  [unused-ignore]
- scrapy/pipelines/images.py:262: error: Argument 2 to "paste" of "Image" has incompatible type "Image"; expected "tuple[int, int] | tuple[int, int, int, int] | None"  [arg-type]
- scrapy/pipelines/images.py:267: error: Argument 2 to "paste" of "Image" has incompatible type "Image"; expected "tuple[int, int] | tuple[int, int, int, int] | None"  [arg-type]
+ tests/test_pipeline_images.py:31: error: Unused "type: ignore" comment  [unused-ignore]

streamlit (https://github.com/streamlit/streamlit)
+ lib/streamlit/runtime/caching/hashing.py:473:1: error: Library stubs not installed for "PIL.Image"  [import-untyped]
+ lib/streamlit/runtime/caching/hashing.py:473:1: note: Hint: "python3 -m pip install types-Pillow"
+ lib/streamlit/runtime/caching/hashing.py:473:1: note: (or run "mypy --install-types" to install all missing stub packages)
+ lib/streamlit/elements/image.py: note: In function "_image_is_gif":
+ lib/streamlit/elements/image.py:185:5: error: Returning Any from function declared to return "bool"  [no-any-return]
+ lib/tests/streamlit/elements/image_test.py:22:1: error: Library stubs not installed for "PIL.Image"  [import-untyped]
- lib/tests/streamlit/elements/image_test.py: note: In function "create_image":
- lib/tests/streamlit/elements/image_test.py:48:9: error: Argument 1 to "rectangle" of "ImageDraw" has incompatible type "List[Tuple[Any, Any]]"; expected "Union[Tuple[float, float, float, float], Tuple[Tuple[float, float], Tuple[float, float]]]"  [arg-type]
- lib/tests/streamlit/elements/image_test.py:68:13: error: Argument 1 to "pieslice" of "ImageDraw" has incompatible type "List[Tuple[Any, Any]]"; expected "Tuple[Tuple[float, float], Tuple[float, float]]"  [arg-type]
- lib/tests/streamlit/elements/image_test.py: note: In function "create_gif":
- lib/tests/streamlit/elements/image_test.py:99:28: error: List item 1 has incompatible type "Tuple[int, ...]"; expected "Union[float, Tuple[float, float]]"  [list-item]

vision (https://github.com/pytorch/vision)
- torchvision/utils.py:228: error: Incompatible types in assignment (expression has type "FreeTypeFont", variable has type "ImageFont")  [assignment]
+ torchvision/utils.py:615: error: Unused "type: ignore" comment  [unused-ignore]
+ torchvision/utils.py:616: error: Unused "type: ignore" comment  [unused-ignore]
+ torchvision/datasets/widerface.py:95: error: Unused "type: ignore" comment  [unused-ignore]
+ torchvision/datasets/cityscapes.py:191: error: Unused "type: ignore" comment  [unused-ignore]
- torchvision/transforms/v2/functional/_geometry.py:297: error: Argument "resample" to "resize" of "Image" has incompatible type "int"; expected "Resampling | Literal[0, 1, 2, 3, 4, 5] | None"  [arg-type]

bokeh (https://github.com/bokeh/bokeh)
+ src/bokeh/io/export.py:50:1: error: Library stubs not installed for "PIL"  [import-untyped]
+ src/bokeh/io/export.py:50:1: note: Hint: "python3 -m pip install types-Pillow"
+ src/bokeh/io/export.py: note: In function "get_screenshot_as_png":
+ src/bokeh/io/export.py:223:1: error: Return type becomes "Any" due to an unfollowed import  [no-any-unimported]

sphinx (https://github.com/sphinx-doc/sphinx)
+ sphinx/util/images.py:15:1: error: Library stubs not installed for "PIL"  [import-untyped]
+ sphinx/builders/_epub_base.py:30:1: error: Library stubs not installed for "PIL"  [import-untyped]
+ sphinx/builders/_epub_base.py:30:1: note: Hint: "python3 -m pip install types-Pillow"
+ sphinx/builders/_epub_base.py:30:1: note: (or run "mypy --install-types" to install all missing stub packages)
+ sphinx/builders/_epub_base.py:30:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
- sphinx/testing/fixtures.py:12:1: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports