GODRIVER-3632: Reroute to use perfcomp from DET

[zhouselena]

GODRIVER-3632

Summary

• Edit shell script to use perfcomp from drivers-evergreen-tools
• Remove perfcomp directory from Go Driver

Background & Motivation

Pilot perf comparison PR comment tool for drivers.

[mongodb-drivers-pr-bot]

🧪 Performance Results

Commit SHA: 79e131e

The following benchmark tests for version 68a362f8e45e930007b9ab6f had statistically significant changes (i.e., |z-score| > 1.96):

Benchmark	Measurement	% Change	Patch Value	Stable Region	H-Score	Z-Score
BenchmarkSingleRunCommand	ops_per_second_min	28.8026	1748.7470	Avg: 1357.6949 Med: 1295.2227 Stdev: 181.3371	0.7653	2.1565
BenchmarkBSONFullDocumentDecoding	ops_per_second_min	21.3254	2026.4862	Avg: 1670.2898 Med: 1637.1194 Stdev: 133.3434	0.8147	2.6713
BenchmarkBSONDeepDocumentDecoding	ops_per_second_min	14.7138	2266.9980	Avg: 1976.2210 Med: 1984.2671 Stdev: 121.0901	0.7689	2.4013
BenchmarkMultiFindMany	ops_per_second_med	-2.2401	3115264.7975	Avg: 3186647.8094 Med: 3184713.3758 Stdev: 33432.9015	0.7469	-2.1351

For a comprehensive view of all microbenchmark results for this PR's commit, please check out the Evergreen perf task for this patch.

[mongodb-drivers-pr-bot]

API Change Report

No changes found!

[Copilot]

Pull Request Overview

This PR migrates the performance comparison functionality from a local implementation in the Go Driver repository to using the centralized perfcomp tool from drivers-evergreen-tools.

• Remove the entire perfcomp directory and its Go modules from the Go Driver
• Update the shell script to use the external perfcomp tool from drivers-evergreen-tools
• Adjust file paths and working directories to accommodate the new external tool location

Reviewed Changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
internal/cmd/perfcomp/mdreport.go	Removes the markdown report generation functionality
internal/cmd/perfcomp/main.go	Removes the main CLI entry point for perfcomp
internal/cmd/perfcomp/go.mod	Removes the Go module definition for perfcomp
internal/cmd/perfcomp/energystatistics_test.go	Removes energy statistics unit tests
internal/cmd/perfcomp/compare.go	Removes the core performance comparison logic and MongoDB analytics integration
etc/perf-pr-comment.sh	Updates script to use external perfcomp tool and adjusts file paths

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[Copilot]

The variable $DRIVERS_TOOLS is used without quotes, which could cause issues if the path contains spaces or special characters. Consider using "$DRIVERS_TOOLS" instead.

Suggested change

	pushd $DRIVERS_TOOLS/.evergreen >/dev/null
	pushd "$DRIVERS_TOOLS/.evergreen" >/dev/null