Remove 'document' case for message with timestamp preview

[jmartinesp]

Type of change

• Feature
• Bugfix
• Technical
• Other : remove no longer used previews.

Content

Removes all the 'document' case previews for messages with timestamps, which were related to using Jsoup for parsing the HTML contents.

Motivation and context

Fixes #2127 .

Screenshots / GIFs

In the PR.

Checklist

• Changes have been tested on an Android device or Android emulator with API 23
• UI change has been tested on both light and dark themes
• Accessibility has been taken into account. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#accessibility
• Pull request is based on the develop branch
• Pull request includes a new file under ./changelog.d. See https://github.com/element-hq/element-x-android/blob/develop/CONTRIBUTING.md#changelog
• Pull request includes screenshots or videos if containing UI changes
• Pull request includes a sign off
• You've made a self review of your PR

[sonarcloud]

Quality Gate passed

Kudos, no new issues were introduced!

0 New issues
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarCloud

[github-actions]

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[bmarty]

Perfect, thanks!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (c2a7b38) 66.97% compared to head (63d6c42) 67.02%.
Report is 3 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #2164      +/-   ##
===========================================
+ Coverage    66.97%   67.02%   +0.05%     
===========================================
  Files         1375     1375              
  Lines        34219    34181      -38     
  Branches      7544     7446      -98     
===========================================
- Hits         22919    22911       -8     
+ Misses        7663     7653      -10     
+ Partials      3637     3617      -20     

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