RFR: 8282763: G1: G1CardSetContainer remove intrusive-list details. [v2]

[Ivan Walulya]

> Hi all,
> 
> Please review this trivial cleanup to remove unnecessary G1CardSetContainer list details.
> 
> Testing: tier 1

Ivan Walulya has updated the pull request incrementally with one additional commit since the last revision:

  cleanup includes

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7743/files
  - new: https://git.openjdk.java.net/jdk/pull/7743/files/804e1558..cf1ea626

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7743&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7743&range=00-01

  Stats: 5 lines in 2 files changed: 1 ins; 4 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7743.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7743/head:pull/7743

PR: https://git.openjdk.java.net/jdk/pull/7743