feat: remove deprecated telemetry flags

[allenhutchison]

Removes the following deprecated telemetry flags from the CLI:

• --telemetry
• --telemetry-target
• --telemetry-otlp-endpoint
• --telemetry-otlp-protocol
• --telemetry-log-prompts
• --telemetry-outfile

These flags have been replaced by settings in the settings.json file.
The related tests have been updated or removed.

[gemini-code-assist]

Summary of Changes

Hello @allenhutchison, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request streamlines the command-line interface by eliminating deprecated telemetry configuration flags. The functionality previously controlled by these flags is now solely managed via the settings.json file, ensuring a consistent and centralized approach to telemetry configuration. This change simplifies the CLI's argument parsing logic and reduces the surface area for configuration options directly on the command line.

Highlights

• Deprecated Telemetry Flags Removal: The pull request removes several deprecated telemetry-related CLI flags, including --telemetry, --telemetry-target, --telemetry-otlp-endpoint, --telemetry-otlp-protocol, --telemetry-log-prompts, and --telemetry-outfile.
• Configuration Centralization: These removed flags have been superseded by equivalent settings that are now managed exclusively through the settings.json file, promoting a centralized configuration approach.
• Test Suite Updates: Corresponding test cases related to the parsing and handling of these deprecated telemetry flags have been updated or entirely removed to reflect their deprecation and removal from the CLI.

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[gemini-code-assist]

Code Review

This pull request cleanly removes several deprecated telemetry-related CLI flags (--telemetry, --telemetry-target, etc.). The changes are well-executed, with corresponding updates to argument parsing, configuration loading, and tests. The removal of the associated test suites for these flags is appropriate, and the remaining tests for environment variable and settings-based configuration appear to be sufficient. The changes are consistent with the goal of migrating telemetry configuration to settings.json and environment variables. I have not identified any high or critical severity issues in this pull request.

[github-actions]

Size Change: -2.1 kB (-0.01%)

Total Size: 17.8 MB

Filename	Size	Change
./bundle/gemini.js	17.8 MB	-2.1 kB (-0.01%)

ℹ️ View Unchanged

Filename	Size
./bundle/sandbox-macos-permissive-closed.sb	1.03 kB
./bundle/sandbox-macos-permissive-open.sb	830 B
./bundle/sandbox-macos-permissive-proxied.sb	1.31 kB
./bundle/sandbox-macos-restrictive-closed.sb	3.29 kB
./bundle/sandbox-macos-restrictive-open.sb	3.36 kB
./bundle/sandbox-macos-restrictive-proxied.sb	3.56 kB

_{compressed-size-action}

[jacob314]

So many deletions!!