RFR: 8263679: C1: Remove vtable call

[Zhengyu Gu]

vtable call is SPARC specific, that can be removed now.

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Commit messages:
 - Copyright years
 - init

Changes: https://git.openjdk.java.net/jdk/pull/3030/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3030&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263679
  Stats: 68 lines in 13 files changed: 0 ins; 57 del; 11 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3030.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3030/head:pull/3030

PR: https://git.openjdk.java.net/jdk/pull/3030