RFR (S) 8211950: Deprecate the check if a JVMTI collector is present assertion

[Per Liden]

Hi JC,

On 10/09/2018 10:35 PM, JC Beyler wrote:
> Hi all,
> 
> I'm sending this to the GC list but I'm not sure as it relates to the 
> JVMTI heap sampling notifications. Let me know what you think.

Since it's touching code in gc/shared/ it's good to include the GC list.

> 
> Could I get a review for this:
> Webrev: http://cr.openjdk.java.net/~jcbeyler/8211950/webrev.00/ 
> <http://cr.openjdk.java.net/%7Ejcbeyler/8211950/webrev.00/>

Looks good!

/Per

> Associated bug: https://bugs.openjdk.java.net/browse/JDK-8211950
> 
> Thanks,
> Jc