RFR: 8330699: Obsolete -XX:+UseEmptySlotsInSupers [v2]

[Coleen Phillimore]

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

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Move option in arguments.cpp

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/19720/files
  - new: https://git.openjdk.org/jdk/pull/19720/files/4d74804a..da791744

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19720&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19720&range=00-01

  Stats: 2 lines in 1 file changed: 1 ins; 1 del; 0 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