Remove search_project_query_builder feature flag
What does this MR do and why?
Remove search_project_query_builder feature flag
References
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Related to #477610 (closed) and #462680 (closed)
MR acceptance checklist
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Screenshots or screen recordings
N/A
How to set up and validate locally
- setup gdk for elasticsearch
- setup a non-admin user (or pick one)
- setup a hierarchy Group A (public) - Group B (internal) - Group C (private) and a project within each group
- give the user access to group C
- perform project searches and verify using the table below
| user type | search type | what should you see | 
|---|---|---|
| admin | global | Project A, B, C | 
| admin | group A | Project A, B, C | 
| admin | group B | Project B, C | 
| admin | group C | Project C | 
| user | global | Project A, B, C | 
| user | group A | Project A, B, C | 
| user | group B | Project B, C | 
| user | group C | Project C | 
| anonymous | global | Project A | 
| anonymous | group A | Project A | 
Edited  by Terri Chu