RFR: 8302806: (fs) Remove unused enum sun.nio.file.SensitivityWatchEventModifier [v2]

[Brian Burkhalter]

> This enum is not used in the JDK and did not appear in external source code searches.

Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:

  8302806: Remove test

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Changes:
  - all: https://git.openjdk.org/jdk/pull/12626/files
  - new: https://git.openjdk.org/jdk/pull/12626/files/e361bfeb..c980dba9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=12626&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=12626&range=00-01

  Stats: 152 lines in 1 file changed: 0 ins; 152 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/12626.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/12626/head:pull/12626

PR: https://git.openjdk.org/jdk/pull/12626