The `#delete_config` function is not used anymore, and Gitaly has
deprecated direct access to the gitconfig in favor of more specialized
RPCs. Remove `#delete_config`.

Note that we do not yet delete `#set_config`: it's still in use to set
"gitlab.fullpath". This usecase will be addressed via a new
`SetFullPath()` RPC, at which point in time we can also remove
`#set_config`.

The `#with_config` function is not used anymore, and Gitaly has
deprecated direct access to the gitconfig in favor of more specialized
RPCs. Remove the function.

While the `FetchRemote()` RPC allows the caller to specify an
authentication header, we still set it up manually in Geo via a call to
`#with_config`. Refactor the code to instead use the designated field
for this such that we don't needlessly call both `#set_config` and
`#delete_config`.

EE: true
Changelog: performance

Starting with f1ef0bd0 (flags: Drop `fetch_remote_params` feature
flag, 2021-07-21), GitLab doesn't use the remote name anymore given that
we always use in-memory remotes.

Clean up all callsites to not pass a remote name anymore.

Add constraints regarding the registry password

See merge request gitlab-org/gitlab!66975

Revert "Merge branch 'enable_gitaly_backup' into 'master'"

See merge request gitlab-org/gitlab!66993

This reverts merge request !66019

Include database name in performance bar

See merge request gitlab-org/gitlab!63819

Refine content for recently renamed feature

See merge request gitlab-org/gitlab!66891

Bump kas to v14.1.1

See merge request gitlab-org/gitlab!66806

Setup GitLab MailGun endpoint for syncing bounced invite emails - redo

See merge request gitlab-org/gitlab!66397

Fix disable_prepared_statements clobbering pool size

See merge request gitlab-org/gitlab!66988

Resolve "Visual review is hard to find / confused with review app"

See merge request gitlab-org/gitlab!66453

Use a fresh config when using with establish_connection

Add worker_resource_boundary to Release workers

See merge request gitlab-org/gitlab!66870

Tidy the introduced-in line for cherry-picking

See merge request gitlab-org/gitlab!66977

Add clarification to steps for Kubernetes Agent install

See merge request gitlab-org/gitlab!66966

Remove unused association code from DAST models

See merge request gitlab-org/gitlab!66900

Update expectation to match new UI text

See merge request gitlab-org/gitlab!66970

Add web_edit instrumentation class

See merge request gitlab-org/gitlab!66789

Small fixes to the introduced-in line for cherry-picking into a
project. Punctuation, linking.

Finalize conversion to bigint for ci_build_trace_chunks

See merge request gitlab-org/gitlab!66123

Update N+1 spec for artifacts

See merge request gitlab-org/gitlab!65354

Update broken links to ZAP documentation

See merge request gitlab-org/gitlab!66914

Mark StoreScansWorker as cpu bound

See merge request gitlab-org/gitlab!66879

Added new security checklist items

See merge request gitlab-org/gitlab!66965

Explain how to export group wikis

See merge request gitlab-org/gitlab!66961

Update Style Guide metadata with direct link

See merge request gitlab-org/gitlab!66934

Add param to query Users API by group SAML provider id

See merge request gitlab-org/gitlab!66167

- update for consuming failure endpoints from Mailgun

Changelog: added

Clean up evalute_protected_tag_for_release_permissions feature flag

See merge request gitlab-org/gitlab!66713

Advanced Search should index trials regardless of seats

See merge request gitlab-org/gitlab!66665