RFR: 8216608: Obsolete stale compiler flags

[Claes Redestad]

Hi,

this patch obsoletes 9 product and diagnostic flags whose purpose
and implementation disappeared along with the flat profiler in JDK 10.

Webrev: http://cr.openjdk.java.net/~redestad/8216608/open.00/
Bug:    https://bugs.openjdk.java.net/browse/JDK-8216608

Testing: tier1

Thanks!

/Claes