RFR: 8339524: Clean up a few ExtendedRobot tests [v5]

[Alisen Chung]

> Cleaning up tests building ExtendedRobot that shouldn't be.

Alisen Chung has updated the pull request incrementally with one additional commit since the last revision:

  revert ActionEventTest

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/20846/files
  - new: https://git.openjdk.org/jdk/pull/20846/files/50b582c0..13f31124

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=20846&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=20846&range=03-04

  Stats: 31 lines in 1 file changed: 21 ins; 3 del; 7 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