RFR: 8293064: Remove unused NET_xxx functions [v2]

[Tyler Steele]

On Wed, 21 Sep 2022 14:01:00 GMT, Darragh Clarke <duke at openjdk.org> wrote:

>> No tests were affected so this is purely a removal PR apart from updating copyright headers.
>> I ran tests for Tier 1,2&3 and everything seems to be passing
>
> Darragh Clarke has updated the pull request incrementally with one additional commit since the last revision:
> 
>   removed more functions

I see you ran tests in T1, T2, & T3. I can do the same on AIX. It will take some time to complete, and I'll update when the results are in.

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PR: https://git.openjdk.org/jdk/pull/10343