Moved three read-only InstanceKlass flags out of AccessFlags to InstanceKlassFlags, and removed unused and unneeded SA code. Tested with tier1-4.
------------- Commit messages: - 8306474: Move InstanceKlass read-only flags Changes: https://git.openjdk.org/jdk/pull/13545/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=13545&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8306474 Stats: 44 lines in 10 files changed: 11 ins; 26 del; 7 mod Patch: https://git.openjdk.org/jdk/pull/13545.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/13545/head:pull/13545 PR: https://git.openjdk.org/jdk/pull/13545
