RFR: 8305794: Unused interface sun.security.util.PermissionFactory can be removed [v2]

[Kevin Driver]

> All known implementors of this interface were removed in [JDK-8029886](https://bugs.openjdk.org/browse/JDK-8029886).

Kevin Driver has refreshed the contents of this pull request, and previous commits have been removed. The incremental views will show differences compared to the previous content of the PR. The pull request contains one new commit since the last revision:

  JDK-8305794: removed unused interface

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Changes:
  - all: https://git.openjdk.org/jdk/pull/13464/files
  - new: https://git.openjdk.org/jdk/pull/13464/files/1ef6c64b..cb6489d9

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=13464&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=13464&range=00-01

  Stats: 0 lines in 0 files changed: 0 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/13464.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/13464/head:pull/13464

PR: https://git.openjdk.org/jdk/pull/13464