RFR: 8342602: Remove JButton/PressedButtonRightClickTest test [v2]

[Alexey Ivanov]

> The `javax/swing/JButton/PressedButtonRightClickTest.java` test that was added by [JDK-8049069](https://bugs.openjdk.org/browse/JDK-8049069) fully duplicates an existing test `javax/swing/JButton/bug4490179.java`.
> 
> To save time running tests, I'm removing `PressedButtonRightClickTest.java`.

Alexey Ivanov has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains two additional commits since the last revision:

 - Merge master
 - 8342602: Remove JButton/PressedButtonRightClickTest test

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/21587/files
  - new: https://git.openjdk.org/jdk/pull/21587/files/bde089aa..950cc8f2

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21587&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21587&range=00-01

  Stats: 221934 lines in 2076 files changed: 128646 ins; 70467 del; 22821 mod
  Patch: https://git.openjdk.org/jdk/pull/21587.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21587/head:pull/21587

PR: https://git.openjdk.org/jdk/pull/21587