freebsd.yml: Drop useless cache actions

[oech3]

Closes #5797 since #10347 was reported.

[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 14.71%

_{Comparing oech3:patch-8 (18a7cd7) with main (8d02762)}

Summary

⚡ 6 improved benchmarks
❌ 1 regressed benchmark
✅ 275 untouched benchmarks
⏩ 38 skipped benchmarks¹

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

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Memory	sort_long_line[160000]	732.3 KB	858.6 KB	-14.71%
⚡	Memory	sort_mixed_data[500000]	25.8 MB	22.4 MB	+15.24%
⚡	Memory	sort_accented_data[500000]	25.5 MB	21.6 MB	+18.11%
⚡	Memory	sort_key_field[500000]	31.4 MB	29.2 MB	+7.53%
⚡	Memory	sort_unique_locale[500000]	36.9 MB	33 MB	+11.82%
⚡	Memory	sort_ascii_only[500000]	25.5 MB	21.9 MB	+16.74%
⚡	Memory	du_wide_tree[(5000, 500)]	1.3 MB	1.2 MB	+3.28%

Footnotes

1. 38 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. ↩

[sylvestre]

why comment and not remove ? :)

I don't think sccache is used in this case as the build is done in a VM

[oech3]

I'm OK to completely remove. But someone saw comments might try to send by rsync.

[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)

[cakebaker]

Thanks!