RFR[XXS]: 8186778 Make obsolete VM options for shared region size control

[Ioi Lam]

Hi,

Please review this very small change. These VM arguments are no longer 
used when creating a CDS archive, so they should be declared obsolete:

https://bugs.openjdk.java.net/browse/JDK-8186778
http://cr.openjdk.java.net/~iklam/jdk10/8186778-make-onsolete-shared-region-size-args.v01/

Thanks
- Ioi

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$ java -XX:SharedReadWriteSize=123  -XX:SharedReadOnlySize=123 
-XX:SharedMiscDataSize=123 -XX:SharedMiscCodeSize=123 -version
Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option 
SharedReadWriteSize; support was removed in 10.0
Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option 
SharedReadOnlySize; support was removed in 10.0
Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option 
SharedMiscDataSize; support was removed in 10.0
Java HotSpot(TM) 64-Bit Server VM warning: Ignoring option 
SharedMiscCodeSize; support was removed in 10.0
java version "10-internal"
Java(TM) SE Runtime Environment (build 10-internal+0-adhoc.iklam.open)
Java HotSpot(TM) 64-Bit Server VM (build 10-internal+0-adhoc.iklam.open, 
mixed mode)