RFR: 8266231: mark hotspot compiler/c1 tests which ignore VM flags

[Igor Ignatyev]

Hi all,

could you please review this small and trivial patch that adds `@requires vm.flagless` to `compiler/c1 ` tests that ignore VM flags?

Thanks,
-- Igor

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Commit messages:
 - 8266231

Changes: https://git.openjdk.java.net/jdk/pull/3773/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3773&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8266231
  Stats: 1 line in 1 file changed: 1 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3773.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3773/head:pull/3773

PR: https://git.openjdk.java.net/jdk/pull/3773