RFR: 8339524: Clean up ExtendedRobot tests

[Alisen Chung]

Cleaning up tests building ExtendedRobot that shouldn't be.

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Commit messages:
 - revert test using ExtendedRobot
 - reverted some tests actually using ExtendedRobot
 - init commit

Changes: https://git.openjdk.org/jdk/pull/20846/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=20846&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8339524
  Stats: 5 lines in 2 files changed: 0 ins; 1 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/20846.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/20846/head:pull/20846

PR: https://git.openjdk.org/jdk/pull/20846