[jdk11u-dev] RFR: 8276943: Backout JDK-8274338 11u backport

[Zhengyu Gu]

JDK-8274338 11u backport caused [SAP nightly test to fail on some of cds tests](http://mail.openjdk.java.net/pipermail/jdk-updates-dev/2021-November/009840.html). Let's back it out.

Test:

- [x] hotspot_runtime
- [x] hotspot_cds

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

Commit messages:
 - Revert "8274338: com/sun/jdi/RedefineCrossEvent.java failed "assert(m != __null) failed: NULL mirror""

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/610/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=610&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8276943
  Stats: 9 lines in 3 files changed: 0 ins; 9 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/610.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/610/head:pull/610

PR: https://git.openjdk.java.net/jdk11u-dev/pull/610