RFR: jdk9: 8029997: [infra] remove Solaris ISA directories and the links

[Tim Bell]

Hi Kumar:

> Please review the removal of  ISA (Instruction Specific Architecture) 
> directories namely sparcv9, amd64
> and the symlinks in these directories,   this was provided to aid 
> transition to jdk8, where solaris 32-bit was
> removed, and the 32-bit binaries were replaced with 64-bit versions.
>
> http://cr.openjdk.java.net/~ksrini/8029997/webrev.0/

Three cheers for code deletion!  Looks good to me.

Tim