chore: Remove userAgent extension in init hook

[kysely]

Description

Removing extension of userAgent (version string) with OneSDK and Parser dependencies version.

@superfaceai/cli/4.0.0-beta.12 darwin-arm64 node-v20.4.0 (with @superfaceai/one-sdk@2.4.2, @superfaceai/parser@2.1.0)

is now

@superfaceai/cli/4.0.0-beta.12 darwin-arm64 node-v20.4.0

Motivation and Context

Having the OneSDK and Parser dependencies version printed out after --version is confusing to the users of the upcoming CLI. Those dependencies are there for the older commands, most likely to be removed soon.

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [ ] I have updated the documentation accordingly. For updating Oclif commands documentation use oclif-dev.
• [ ] I have read the CONTRIBUTION_GUIDE document.
• [ ] I haven't repeated the code. (DRY)
• [ ] I have added tests to cover my changes.
• [ ] All new and existing tests passed.