RFR: 8302155: [AIX] NUM_LCPU is not required variable [v2]

[Amit Kumar]

> We don't need NUM_LCPU, it's just a small code change which removes this variable. I've tested it on AIX and cores are detected successfully with changes. 
> @backwaterred please take look at it. 
>  Suggestions are welcomed :)

Amit Kumar has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - addressing comment from magicus
 - Merge branch 'aix_build_variable' of github.com:offamitkumar/jdk into aix_build_variable
 - could be removed

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/12494/files
  - new: https://git.openjdk.org/jdk/pull/12494/files/08a528f7..17e3e902

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12494&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12494&range=00-01

  Stats: 15746 lines in 522 files changed: 7855 ins; 3432 del; 4459 mod
  Patch: https://git.openjdk.org/jdk/pull/12494.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12494/head:pull/12494

PR: https://git.openjdk.org/jdk/pull/12494