hg: jdk/sandbox: Convert license of microbenchmarks from GPL+CP to GPL

[claes.redestad at oracle.com]

Changeset: 8a8b778c8163
Author:    redestad
Date:      2018-10-19 13:47 +0200
URL:       http://hg.openjdk.java.net/jdk/sandbox/rev/8a8b778c8163

Convert license of microbenchmarks from GPL+CP to GPL

! test/micro/classes/org/openjdk/bench/java/lang/ArrayCopy.java
! test/micro/classes/org/openjdk/bench/java/lang/reflect/Clazz.java
! test/micro/classes/org/openjdk/bench/java/lang/reflect/ClazzWithSecurityManager.java