Remove telemetry

[rdettai-sk]

Description

Remove telemetry just like in upstream.

How was this PR tested?

Describe how you tested this PR.

[Copilot]

Pull request overview

This PR removes the quickwit-telemetry crate and all remaining call sites/config/docs that referenced telemetry, aligning the repository with an upstream state that no longer ships telemetry.

Changes:

• Removed the quickwit-telemetry crate (code + Cargo manifest) and its workspace membership.
• Removed telemetry event emission from the CLI and UI server, plus CI env vars and user documentation for QW_DISABLE_TELEMETRY.
• Updated Cargo.lock and third-party license inventory to reflect dependency graph changes.

Reviewed changes

Copilot reviewed 16 out of 17 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
quickwit/quickwit-telemetry/src/sink.rs	Deleted telemetry sink + HTTP client implementation.
quickwit/quickwit-telemetry/src/sender.rs	Deleted telemetry sender/loop implementation and tests.
quickwit/quickwit-telemetry/src/payload.rs	Deleted telemetry payload/event schema.
quickwit/quickwit-telemetry/src/lib.rs	Deleted telemetry crate public API (start_telemetry_loop, send_telemetry_event, env key).
quickwit/quickwit-telemetry/Cargo.toml	Removed telemetry crate manifest and dependencies.
quickwit/quickwit-serve/src/ui_handler.rs	Removed UI index-load telemetry event emission.
quickwit/quickwit-serve/Cargo.toml	Dropped quickwit-telemetry dependency.
quickwit/quickwit-cli/src/service.rs	Removed telemetry loop setup and run/end command telemetry events.
quickwit/quickwit-cli/src/main.rs	Removed telemetry-dependent help/about text.
quickwit/quickwit-cli/Cargo.toml	Dropped quickwit-telemetry dependency.
quickwit/Cargo.toml	Removed quickwit-telemetry from workspace members/default-members and workspace deps.
quickwit/Cargo.lock	Removed telemetry crate and related dependency entries; normalized some dependency specs.
LICENSE-3rdparty.csv	Updated third-party inventory entries after dependency changes.
docs/telemetry.md	Removed telemetry documentation page.
docs/reference/cli.md	Removed QW_DISABLE_TELEMETRY CLI env var reference.
.github/workflows/coverage.yml	Removed QW_DISABLE_TELEMETRY from workflow env.
.github/workflows/ci.yml	Removed QW_DISABLE_TELEMETRY from workflow env.

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