[cleanup][broker]remove methods no longer used in AdminResource

[Pomelongan]

Motivation

org.apache.pulsar.broker.admin.AdminResource#fetchPartitionedTopicMetadataCheckAllowAutoCreation and org.apache.pulsar.broker.admin.AdminResource#fetchPartitionedTopicMetadata are no longer used.

Modifications

remove org.apache.pulsar.broker.admin.AdminResource#fetchPartitionedTopicMetadataCheckAllowAutoCreation and org.apache.pulsar.broker.admin.AdminResource#fetchPartitionedTopicMetadata.

Verifying this change

• Make sure that the change passes the CI checks.

This change is a trivial rework / code cleanup without any test coverage.

Does this pull request potentially affect one of the following parts:

If the box was checked, please highlight the changes

• Dependencies (add or upgrade a dependency)
• The public API
• The schema
• The default values of configurations
• The binary protocol
• The REST endpoints
• The admin CLI options
• Anything that affects deployment

Documentation

• doc
• doc-required
• doc-not-needed
• doc-complete