[lworld] RFR: 8294797: [lworld] update javadoc to remove references to primitive classes [v2]

[Mandy Chung]

> This reverts the javadoc changes for primitive classes and a couple leftover changes due to the previous design that is no longer applicable.

Mandy Chung 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:

 - update @throws for references
 - Merge branch 'lworld' of https://github.com/openjdk/valhalla into javadoc-fix
 - 8294797: [lworld] update javadoc to remove references to primitive classes

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

Changes:
  - all: https://git.openjdk.org/valhalla/pull/776/files
  - new: https://git.openjdk.org/valhalla/pull/776/files/7c2794d4..f0d6634b

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=valhalla&pr=776&range=01
 - incr: https://webrevs.openjdk.org/?repo=valhalla&pr=776&range=00-01

  Stats: 891 lines in 35 files changed: 624 ins; 113 del; 154 mod
  Patch: https://git.openjdk.org/valhalla/pull/776.diff
  Fetch: git fetch https://git.openjdk.org/valhalla pull/776/head:pull/776

PR: https://git.openjdk.org/valhalla/pull/776