hg: amber/amber/jdk: Remove cast check (which does not work for primtives). Cast checking is

[paul.sandoz at oracle.com]

Changeset: b79f75f79d88
Author:    psandoz
Date:      2017-07-21 09:42 -0700
URL:       http://hg.openjdk.java.net/amber/amber/jdk/rev/b79f75f79d88

Remove cast check (which does not work for primtives). Cast checking is
performed in the generic bootstrap invoke code.

! src/java.base/share/classes/java/lang/invoke/ConstantDynamic.java