RFR: 8250669: Running JMH micros is broken after JDK-8248135

Wed Oct 28 21:00:51 UTC 2020

A microbenchmark with --enable-preview was added in JDK-8248135. This had the unintended side effect that we now had to always run with --enable-preview. 

With records out of preview, I think the best course of action now is to not build the micros with preview enabled, and leave it for a future RFE to figure out how to add proper support for preview features.

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Commit messages:
 - Drop --enable-preview from microbenchmarks

Changes: https://git.openjdk.java.net/jdk/pull/914/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=914&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8250669
  Stats: 3 lines in 2 files changed: 0 ins; 1 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/914.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/914/head:pull/914

PR: https://git.openjdk.java.net/jdk/pull/914