RFR: 8293353: [BACKOUT] G1: Remove redundant is-marking-active checks in C1 barrier

[Albert Mingkun Yang]

Clean revert of [JDK-8289138](https://bugs.openjdk.org/browse/JDK-8289138) to keep CI clean.

Test: ~2/200 failing rate before the PR and pass after the PR.

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Commit messages:
 - Revert "8289138: G1: Remove redundant is-marking-active checks in C1 barrier"

Changes: https://git.openjdk.org/jdk/pull/10159/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10159&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8293353
  Stats: 51 lines in 6 files changed: 51 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/10159.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10159/head:pull/10159

PR: https://git.openjdk.org/jdk/pull/10159