build: rm proguard jsoup -dontwarn declarations

[david-allison]

no longer necessary in jsoup 1.22.2

• Concrete references to com.google.re2j.* classes means re2j is non-optional or the android r8 shrinker throws an error jhy/jsoup#2459
• I missed this in build(deps): bump org.jsoup:jsoup from 1.22.1 to 1.22.2 #20795

Checklist

• You have a descriptive commit message with a short title (first line, max 50 chars).
• You have commented your code, particularly in hard-to-understand areas
• You have performed a self-review of your own code
• UI changes: include screenshots of all affected screens (in particular showing any new or changed strings)
• UI Changes: You have tested your change using the Google Accessibility Scanner

[mikehardy]

oh nice, thanks for the cleanup