fix(ci): remove outdated analysis mode

[not-matthias]

Hey, just wanted to let you know that we replaced the analysis for memory profiling with memory.

This will make it easier to use a matrix which allows passing the same value to cargo codspeed and the CodSpeedHQ/action, removing the need for an extra if statement. See the changes in this PR for the simplified/fixed version.

[github-actions]

GNU testsuite comparison:

Skipping an intermittent issue tests/shuf/shuf-reservoir (passes in this run but fails in the 'main' branch)
Skipping an intermittent issue tests/sort/sort-stale-thread-mem (passes in this run but fails in the 'main' branch)

[codspeed-hq]

CodSpeed Performance Report

Merging this PR will degrade performance by 3.18%

_{Comparing AvalancheHQ:cod-2066-analysis-mode-missing-for-codspeed-rust-causing-workflow (401eb89) with main (f388214)}

Summary

❌ 1 regressed benchmark
✅ 141 untouched benchmarks
⏩ 180 skipped benchmarks¹

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	cp_large_file[16]	370.9 µs	383.1 µs	-3.18%

Footnotes

1. 180 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩