RFR: JDK-8319318: bufferedStream fixed case can be removed

[David Holmes]

On Thu, 2 Nov 2023 13:05:18 GMT, Thomas Stuefe <stuefe at openjdk.org> wrote:

> Trivial change to remove an unused constructor / use case for bufferedStream
> 
> Tests: GHAs (Windows error unrelated)

Seems okay. I checked back to JDK 7 and couldn't see any use of a bufferedStream backed by another buffer.

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Marked as reviewed by dholmes (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/16475#pullrequestreview-1714336621