RFR: JDK-8286348: incorrect use of `@serial` [v3]

[Jonathan Gibbons]

> Please review a fix to remove incorrect use of the `@serial` tag from the doc comments for methods such as `readObject` and `readResolve`. The tag has no effect in this position other than to trigger warnings from the standard doclet when running javadoc.
> 
> There is no change to the generated documentation as a result off this change. In particular, there is no change to the API docs for any of the modified files, or to the overall top-level serialized-form.html file.
> 
> Although most of the affected files are in the `java.desktop` module, there is one outlier, in `java.security.Provider`.

Jonathan Gibbons has updated the pull request incrementally with one additional commit since the last revision:

  Fix whitespace (blank lines) after merge

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Changes:
  - all: https://git.openjdk.java.net/jdk/pull/8586/files
  - new: https://git.openjdk.java.net/jdk/pull/8586/files/d1920183..8684b44b

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=8586&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=8586&range=01-02

  Stats: 10 lines in 10 files changed: 10 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/8586.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/8586/head:pull/8586

PR: https://git.openjdk.java.net/jdk/pull/8586