RFR: 8023562: [TEST_BUG] java/awt/Mouse/EnterExitEvents/DragWindowTest.java failed on ubuntu 13 and mac 10.11

[Alisen Chung]

Test was run on macos and linux 100x and passed. Removing from ProblemList

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Commit messages:
 - removed DragWindowTest.java from ProblemList

Changes: https://git.openjdk.org/jdk/pull/11152/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=11152&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8023562
  Stats: 1 line in 1 file changed: 0 ins; 1 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/11152.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/11152/head:pull/11152

PR: https://git.openjdk.org/jdk/pull/11152