RFR jdk15 8247956: remove scripts under bin/nashorn and doc/nashorn/source

[James Laskey]

+1

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> On Jun 23, 2020, at 3:37 AM, sundararajan.athijegannathan at oracle.com wrote:
> 
> Please review
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8247956
> 
> Webrev: http://cr.openjdk.java.net/~sundar/8247956/webrev.00/
> 
> Thanks
> 
> -Sundar
>