typing: fix runtime issues

src/ocrmypdf/pluginspec.py

@@ -197,7 +197,7 @@ def rasterize_pdf_page(
 
 
 @hookspec(firstresult=True)
-def filter_ocr_image(page: 'PageContext', image: Image.Image) -> Image.Image:
+def filter_ocr_image(page: 'PageContext', image: 'Image.Image') -> 'Image.Image':
     """Called to filter the image before it is sent to OCR.
 
     This is the image that OCR sees, not what the user sees when they view the

tests/test_page_numbers.py

@@ -50,10 +50,6 @@ def test_nonmonotonic_warning(caplog):
     assert 'out of order' in caplog.text
 
 
-def test_list_range():
-    assert _pages_from_ranges([0, 1, 2]) == {0, 1, 2}
-
-
 def test_limited_pages(resources, outpdf):
     multi = resources / 'multipage.pdf'
     ocrmypdf.ocr(