remove unneeded support library

[michaelknoch]

Type of change: cleanup

Motivation (current vs expected behavior)

Support library is not used at all, removing it might fix androidx/support issues in parent projects.

Please check if the PR fulfills these requirements

• [ ] Self-review: I am confident this is the simplest and clearest way to achieve the expected behaviour
• [ ] There are no dependencies on other PRs or I have linked dependencies through Zenhub
• [ ] The commit messages are clean and understandable
• [ ] Tests for the changes have been added (for bug fixes / features)

[codecov[bot]]

Codecov Report

Merging #293 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #293   +/-   ##
=======================================
  Coverage   51.92%   51.92%           
=======================================
  Files          87       87           
  Lines        3168     3168           
=======================================
  Hits         1645     1645           
  Misses       1523     1523

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