db_redis: change logs on delete

[smititelu]

Pre-Submission Checklist

• [X] Commit message has the format required by CONTRIBUTING guide
• [X] Commits are split per component (core, individual modules, libs, utils, ...)
• [X] Each component has a single commit (if not, squash them into one commit)
• [X] No commits to README files for modules (changes must be done to docbook files in doc/ subfolder, the README file is autogenerated)

Type Of Change

• [X] Small bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds new functionality)
• [ ] Breaking change (fix or feature that would change existing functionality)

Checklist:

• [ ] PR should be backported to stable branches
• [X] Tested changes locally
• [ ] Related to issue #XXXX (replace XXXX with an open issue number)

Description

Issue: when using usrloc with db_redis, I get constant WARNING logs for 'delete' via usrloc timer. The real WARNING, in my opinion, is when doing full table scans(which is already logged as so).

Make logs less important when performing table scans using a match key.