[jdk11u-dev] RFR: 8279337: The MToolkit is still referenced in a few places

[Andrew Lu]

I backport this for parity with 11.0.25-oracle.

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Commit messages:
 - Backport f203723fc72c5d92c8745d4c595f360a9b50c512

Changes: https://git.openjdk.org/jdk11u-dev/pull/2821/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2821&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8279337
  Stats: 117 lines in 18 files changed: 5 ins; 57 del; 55 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2821.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2821/head:pull/2821

PR: https://git.openjdk.org/jdk11u-dev/pull/2821