Remove example configuration file

[brfrn169]

Description

This PR removes the example configuration file (conf/database.properties) because I don’t think we need to keep it for now. If anyone has any objections, I will close this PR.

Related issues and/or PRs

N/A

Changes made

• Removed the example configuration file (conf/database.properties).

Checklist

• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation to reflect the changes.
• Any remaining open issues linked to this PR are documented and up-to-date (Jira, GitHub, etc.).
• Tests (unit, integration, etc.) have been added for the changes.
• My changes generate no new warnings.
• Any dependent changes in other PRs have been merged and published.

Additional notes (optional)

N/A

Release notes

N/A

[komamitsu]

LGTM! 👍

[Torch3333]

LGTM, thank you!

[josh-wong]

This conf/database.properties file is linked to in the following docs:

• ScalarDB Schema Loader
• Importing Existing Tables to ScalarDB by Using ScalarDB Schema Loader

To avoid accidentally creating broken links, how about we delete the sentence For a sample properties file, see [`database.properties`](https://github.com/scalar-labs/scalardb/blob/master/conf/database.properties).?

[brfrn169]

This conf/database.properties file is linked to in the following docs:

• ScalarDB Schema Loader
• Importing Existing Tables to ScalarDB by Using ScalarDB Schema Loader

@josh-wong Thank you for pointing that out! I didn't know the sample configuration file was referenced in some documents.

To avoid accidentally creating broken links, how about we delete the sentence For a sample properties file, see [`database.properties`](https://github.com/scalar-labs/scalardb/blob/master/conf/database.properties).?

Or, can we have the sample configuration file in the doc site?

[josh-wong]

@brfrn169

Or, can we have the sample configuration file in the doc site?

Actually, how about if we change the link to the database.properties file that exists in the scalardb-samples repository? That way, users can see the code nicely formatted in GitHub rather than as plaintext:

• https://github.com/scalar-labs/scalardb-samples/blob/main/scalardb-sample/database.properties

I think we have some docs that point to that properties file also.

[feeblefakie]

LGTM! Thank you!

[feeblefakie]

@josh-wong The database.properites deleted in this PR is different from the database.properties you mentioned.