RFR: 8245457: [TestBug] Enable and fix ignored tests in ButtonBaseTest & ButtonTest

[Ajit Ghaisas]

Issue : https://bugs.openjdk.java.net/browse/JDK-8245457

Fix : It is a simple test fix. I have enabled the ignored tests from ButtonBaseTest & ButtonTest test classes & fixed
them. Also removed a print to std.out.

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Commit messages:
 - enable ignored unit tests

Changes: https://git.openjdk.java.net/jfx/pull/227/files
 Webrev: https://webrevs.openjdk.java.net/jfx/227/webrev.00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8245457
  Stats: 36 lines in 2 files changed: 25 ins; 6 del; 5 mod
  Patch: https://git.openjdk.java.net/jfx/pull/227.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/227/head:pull/227

PR: https://git.openjdk.java.net/jfx/pull/227