Remove AppContext usage from several Swing classes that use it via Swing utility (still used by other cases so can't remove that yet).
One ToolTipManager test for the AppContext is removed. ------------- Commit messages: - 8378297 Changes: https://git.openjdk.org/jdk/pull/29830/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29830&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8378297 Stats: 208 lines in 8 files changed: 15 ins; 151 del; 42 mod Patch: https://git.openjdk.org/jdk/pull/29830.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/29830/head:pull/29830 PR: https://git.openjdk.org/jdk/pull/29830
