Flush column family

[GalRogozinski]

Description

Delete column family correctly

Fixes #1482

Type of change

• Bug fix (a non-breaking change which fixes an issue)

How Has This Been Tested?

Ran on dry with rescan Will be farther validated by the reviewer

Checklist:

• [x] My code follows the style guidelines for this project
• [x] I have performed a self-review of my own code
• [x] I have commented my code, particularly in hard-to-understand areas
• [x] I have added tests that prove my fix is effective or that my feature works
• [ ] New and existing unit tests pass locally with my changes

[GalRogozinski]

@karimodm maybe it is unlikely but could the revalidate issue you had could be related to this?

[GalRogozinski]

@karimodm just to be clear, did you test again without the PR and you noticed that there is no corruption?