RFR: 8277535: Remove redundant Stream.distinct()/sorted() steps [v2]

[Andrey Turbanov]

> 1. Stream.distinct() is redundant before toSet() collector. Duplicates will be collapsed by Collector.
> 2. Stream.sorted() is redundant before toMap() collector. Keys will be shuffled by Collector (it's a HashMap in current implementation)

Andrey Turbanov has updated the pull request incrementally with one additional commit since the last revision:

  8277535: Remove redundant Stream.distinct()/sorted() steps
  update copyright year

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/5714/files
  - new: https://git.openjdk.java.net/jdk/pull/5714/files/b326898d..e0312d2d

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=5714&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=5714&range=00-01

  Stats: 3 lines in 3 files changed: 0 ins; 0 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/5714.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/5714/head:pull/5714

PR: https://git.openjdk.java.net/jdk/pull/5714