RFR: 8316998: Remove redundant type arguments [v3]

[Mourad Abbay]

> Remove cases of redundant type arguments in the java.util.stream package.

Mourad Abbay has updated the pull request incrementally with one additional commit since the last revision:

  Update copyright year.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/15936/files
  - new: https://git.openjdk.org/jdk/pull/15936/files/1107c222..d8b3d2ad

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15936&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15936&range=01-02

  Stats: 8 lines in 8 files changed: 0 ins; 0 del; 8 mod
  Patch: https://git.openjdk.org/jdk/pull/15936.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15936/head:pull/15936

PR: https://git.openjdk.org/jdk/pull/15936