RFR: 2335: Avoid creating unneeded objects

[Pavel Rappo]

This PR removes needless objects, some of which are resources. Removing those objects should have no effect.

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Commit messages:
 - Initial commit

Changes: https://git.openjdk.org/skara/pull/1680/files
  Webrev: https://webrevs.openjdk.org/?repo=skara&pr=1680&range=00
  Issue: https://bugs.openjdk.org/browse/SKARA-2335
  Stats: 23 lines in 5 files changed: 0 ins; 13 del; 10 mod
  Patch: https://git.openjdk.org/skara/pull/1680.diff
  Fetch: git fetch https://git.openjdk.org/skara.git pull/1680/head:pull/1680

PR: https://git.openjdk.org/skara/pull/1680