Cleanup: pep8

check_blender_release/check_release.py

check_source/check_descriptions.py

check_source/check_header_duplicate.py

check_source/check_spelling.py

check_source/check_style_c.py

git/git_sort_commits.py

utils/blender_theme_as_c.py

utils/cycles_commits_sync.py

utils/git_log_review_commits.py

utils/git_log_review_commits_advanced.py

utils/header_clean.py

utils/make_cursor_gui.py

utils/rna_manual_reference_updater.py

utils_ide/qtcreator/externaltools/qtc_blender_diffusion.py

utils_ide/qtcreator/externaltools/qtc_cpp_to_c_comments.py

utils_ide/qtcreator/externaltools/qtc_doxy_file.py

utils_ide/qtcreator/externaltools/qtc_project_update.py