fix combine property data to drop old intraday tables

[FlorianASchroeder]

Description & motivation

Resolves #255

This PR drops old intraday tables in case their equivalent daily table becomes available and has been copied to the combined dataset. It fixes the issue of:

• data duplication that is not sufficiently resolved by the deduplication in base_ga4__events
• waste of storage (and cost) of intraday tables clones

Checklist

• [x] I have verified that these changes work locally
• [x] I have updated the README.md (if applicable)
• [ ] I have added tests & descriptions to my models (and macros if applicable)
• [ ] I have run dbt test and python -m pytest . to validate existing tests

[dgitis]

Thanks for reporting this and submitting a fix. I'll try creating a dummy dataset to test this fix on over the weekend.

[adamribaudo-velir]

merging. thanks!