Drop unused index in ci_builds
Ref: #386268 (closed)
What does this MR do and why?
This MR drops an unused index on gitlab.com
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We successfully created our unique index this weekend so we can remove the current invalid invalid index that we have in production.
Indexes:
- "index_ci_builds_on_token_encrypted_partition_id_unique" UNIQUE, btree (token_encrypted, partition_id) WHERE token_encrypted IS NOT NULL INVALID
"unique_ci_builds_token_encrypted_and_partition_id" UNIQUE, btree (token_encrypted, partition_id) WHERE token_encrypted IS NOT NULL
MR acceptance checklist
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