RFR(S) : 8245610 : remove in-tree copy on gtest

[Erik Joelsson]

On 2020-06-07 23:56, Thomas Stüfe wrote:
> Also, it may be me, but where do I find the official build 
> documentation? Googling "building openjdk" gives me a number of hits, 
> neither one seems official - the top hit seems to be one from Magnus' 
> private cr directory :) but since it does not mention google test at 
> all I don't think this is recent.
>
The official building doc is found in the source tree in 
doc/building.[md|html].

/Erik