RFR: 8272392 Lanai: SwingSet2. Black background on expanding tree node

[Alexey Ushakov]

Removed creation of the separate encoder depending on destination properties as we don't use this info to customize the encoder properties

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Commit messages:
 - 8272392 Lanai: SwingSet2. Black background on expanding tree node

Changes: https://git.openjdk.java.net/jdk/pull/6529/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=6529&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8272392
  Stats: 66 lines in 6 files changed: 12 ins; 19 del; 35 mod
  Patch: https://git.openjdk.java.net/jdk/pull/6529.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/6529/head:pull/6529

PR: https://git.openjdk.java.net/jdk/pull/6529