[jdk25u-dev] RFR: 8373984: Check for macos 11 in CGraphicsDevice.m can be removed

[Matthias Baesken]

8373984: Check for macos 11 in CGraphicsDevice.m can be removed

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Commit messages:
 - Backport 6c9999ca8d0722bfb3a945dd4bea666eb4a028cc

Changes: https://git.openjdk.org/jdk25u-dev/pull/148/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk25u-dev&pr=148&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8373984
  Stats: 13 lines in 1 file changed: 4 ins; 6 del; 3 mod
  Patch: https://git.openjdk.org/jdk25u-dev/pull/148.diff
  Fetch: git fetch https://git.openjdk.org/jdk25u-dev.git pull/148/head:pull/148

PR: https://git.openjdk.org/jdk25u-dev/pull/148