textproc/py-ocrmypdf: Update to 13.4.2

• Remove a copy/paste leftover from the previous commit.

Changelog:

https://github.com/ocrmypdf/OCRmyPDF/blob/v13.4.2/docs/release_notes.rst

MFH: 2022Q2
(cherry picked from commit e24be10027799d0ac639861a909155c901a88e73)