RFR: 8253008: Remove develop flags TraceLongCompiles/LongCompileThreshold [v2]

[Robbin Ehn]

> These flags make little sense.
> They measure non safepointing VM ops, that's only handshake now.
> Which have little relation to compiles.
> 
> Builds runs locally, running T1 now.

Robbin Ehn has updated the pull request with a new target base due to a merge or a rebase. The pull request now
contains two commits:

 - Merge branch 'master' into 8253008-long-compile-flags
 - Removed

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Changes: https://git.openjdk.java.net/jdk/pull/111/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=111&range=01
  Stats: 23 lines in 2 files changed: 0 ins; 22 del; 1 mod
  Patch: https://git.openjdk.java.net/jdk/pull/111.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/111/head:pull/111

PR: https://git.openjdk.java.net/jdk/pull/111