RFR: 8377797: Remove SA support for MethodData and the printmdo command [v4]

[Coleen Phillimore]

> This change removes MethodData code copied into SA that's out of date for the valhalla repo.
> 
> Tested with tier1-3.

Coleen Phillimore has updated the pull request incrementally with one additional commit since the last revision:

  Update comment.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/29693/files
  - new: https://git.openjdk.org/jdk/pull/29693/files/6bf4ef14..e95e3ad7

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=29693&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=29693&range=02-03

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/29693.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29693/head:pull/29693

PR: https://git.openjdk.org/jdk/pull/29693