RFR: JDK-8279956: Useless method Scheduling::ComputeLocalLatenciesForward() [v2]

[SUN Guoyun]

> Method `Scheduling::ComputeLocalLatenciesForward()` be used for compute the latency of all the instructions and write the result to `_node_latency`. But I found that `_node_latency` was never used. So I think method `Scheduling::ComputeLocalLatenciesForward()` can be deleted, which is also an enhancement to the efficiency of compilation threads.

SUN Guoyun has updated the pull request incrementally with one additional commit since the last revision:

  8279956: Useless method Scheduling::ComputeLocalLatenciesForward()

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7062/files
  - new: https://git.openjdk.java.net/jdk/pull/7062/files/dd85095b..5dd1af8f

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7062&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7062&range=00-01

  Stats: 7 lines in 1 file changed: 0 ins; 6 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7062.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7062/head:pull/7062

PR: https://git.openjdk.java.net/jdk/pull/7062