removed backupstate and restorestate subcommands

[macfarla]

PR description

these commands are not being used, and they are hard-coded to work with forest which we have deprecated. ref #9812

Fixed Issue(s)

fixes #9811

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• For database changes (e.g. KeyValueSegmentIdentifier) considered compatibility and performed forwards and backwards compatibility tests

Locally, you can run these tests to catch failures early:

• spotless: ./gradlew spotlessApply
• unit tests: ./gradlew build
• acceptance tests: ./gradlew acceptanceTest
• integration tests: ./gradlew integrationTest
• reference tests: ./gradlew ethereum:referenceTests:referenceTests
• hive tests: Engine or other RPCs modified?

[siladu]

🔥
Worth a breaking change changelog?

[pinges]

LGTM