RFR: 8263544: Unused argument in ConstantPoolCacheEntry::set_field()

[Frederic Parain]

Please review this trivial fix removing an unused argument from ConstantPoolCacheEntry::set_field().

Thank you,

Fred

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Commit messages:
 - Remove unused argument in ConstantPoolCacheEntry::set_field()

Changes: https://git.openjdk.java.net/jdk/pull/2978/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2978&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263544
  Stats: 6 lines in 3 files changed: 0 ins; 3 del; 3 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2978.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2978/head:pull/2978

PR: https://git.openjdk.java.net/jdk/pull/2978