RFR: 8280146: Parallel: Remove time log tag

Tue Jan 18 14:15:52 UTC 2022

Simple change of removing some unhelpful logs in Parallel GC. Then, `time` log tag becomes unused and is removed as well.

Test: hotspot_gc

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Commit messages:
 - time-tag

Changes: https://git.openjdk.java.net/jdk/pull/7128/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7128&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8280146
  Stats: 28 lines in 4 files changed: 0 ins; 28 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7128.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7128/head:pull/7128

PR: https://git.openjdk.java.net/jdk/pull/7128