RFR: 8336412: sun.net.www.MimeTable has a few unused methods [v3]

[Volkan Yazıcı]

> Cleans up `sun.net.www.MimeTable`:
> 
> * Removes unused methods & variables
> * Removes commented out code
> * Simplifies iterations over arrays

Volkan Yazıcı has updated the pull request incrementally with one additional commit since the last revision:

  Remove unused and hide locally accessed

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/22831/files
  - new: https://git.openjdk.org/jdk/pull/22831/files/dbd8bab7..82f2b3a1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=22831&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=22831&range=01-02

  Stats: 75 lines in 2 files changed: 1 ins; 57 del; 17 mod
  Patch: https://git.openjdk.org/jdk/pull/22831.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/22831/head:pull/22831

PR: https://git.openjdk.org/jdk/pull/22831