device-nokia-n900: drop deprecated deviceinfo options

screen_height and screen_width are now deprecated options according to the wiki. drop them

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approved this merge request

approved this merge request

added 16 commits

• 16037c3a...f3f0f965 - 15 commits from branch postmarketOS:master
• ffa0f124 - nokia-n900: remove deprecated deviceinfo options (MR 6168)

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enabled an automatic merge when all merge checks for ffa0f124 pass

Thanks!

canceled the automatic merge

merged