RFR: 8330699: Obsolete -XX:+UseEmptySlotsInSupers [v3]

[Coleen Phillimore]

> Remove code to not use empty slots in supers.
> Tested with tier1-4.

Coleen Phillimore has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains three commits:

 - Merge branch 'master' into supers
 - Move option in arguments.cpp
 - 8330699: Obsolete -XX:+UseEmptySlotsInSupers

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Changes: https://git.openjdk.org/jdk/pull/19720/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19720&range=02
  Stats: 101 lines in 4 files changed: 1 ins; 98 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/19720.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19720/head:pull/19720

PR: https://git.openjdk.org/jdk/pull/19720