RFR: 8233568: [TESTBUG] AWT event tests failing on MacOS

[Alisen Chung]

Tests passing on macos, so removing from ProblemList

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Commit messages:
 - 8233568: [TESTBUG] AWT event tests failing on MacOS

Changes: https://git.openjdk.java.net/jdk/pull/6067/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6067&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8233568
  Stats: 6 lines in 1 file changed: 0 ins; 5 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6067.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6067/head:pull/6067

PR: https://git.openjdk.java.net/jdk/pull/6067