RFR: 8304833: (fc) Remove dead code in sun.nio.ch.FileChannelImpl::implCloseChannel

[Brian Burkhalter]

On Thu, 23 Mar 2023 20:09:08 GMT, Alan Bateman <alanb at openjdk.org> wrote:

> check if parent can be changed from Object to Closeable

Changed in 925f763d14d6b39f49bf58820f385a041dfae446. Clean + images build no problems seen.

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PR Comment: https://git.openjdk.org/jdk/pull/13168#issuecomment-1481852548