remove old benchmarks, update readme

[itsdfish]

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[github-actions]

Benchmark Results

	master	0518d6a...	master/0518d6af5d26f5...
blend/1	0.212 ± 0.029 μs	0.212 ± 0.025 μs	1
blend/10	0.44 ± 0.069 μs	0.442 ± 0.07 μs	0.996
blend/100	2.98 ± 0.33 μs	2.98 ± 0.3 μs	1
blend/1000	23.3 ± 0.79 μs	23.4 ± 0.9 μs	0.995
retrieval_probs/blc/1	0.163 ± 0.011 μs	0.163 ± 0.012 μs	1
retrieval_probs/blc/10	0.311 ± 0.17 μs	0.316 ± 0.17 μs	0.984
retrieval_probs/blc/100	2.05 ± 0.17 μs	2.05 ± 0.17 μs	0.999
retrieval_probs/blc/1000	15.8 ± 0.13 μs	15.9 ± 0.1 μs	0.997
retrieval_probs/bll/1	0.24 ± 0.018 μs	0.24 ± 0.021 μs	1
retrieval_probs/bll/10	0.384 ± 0.16 μs	0.385 ± 0.17 μs	0.999
retrieval_probs/bll/100	2.12 ± 0.16 μs	2.14 ± 0.17 μs	0.995
retrieval_probs/bll/1000	15.9 ± 0.15 μs	15.9 ± 0.13 μs	1
retrieval_probs/mmp/1	1.59 ± 0.19 μs	1.59 ± 0.19 μs	0.996
retrieval_probs/mmp/10	2 ± 0.28 μs	2 ± 0.27 μs	0.998
retrieval_probs/mmp/100	5.4 ± 1.8 μs	5.41 ± 1.8 μs	0.998
retrieval_probs/mmp/1000	26.6 ± 0.37 μs	26.4 ± 0.35 μs	1.01
retrieval_probs/sa/1	0.237 ± 0.018 μs	0.233 ± 0.025 μs	1.01
retrieval_probs/sa/10	0.395 ± 0.16 μs	0.4 ± 0.17 μs	0.989
retrieval_probs/sa/100	2.29 ± 0.16 μs	2.31 ± 0.17 μs	0.993
retrieval_probs/sa/1000	18.7 ± 0.16 μs	18.6 ± 0.12 μs	1
retrieve/blc/1	0.136 ± 0.0091 μs	0.136 ± 0.009 μs	1
retrieve/blc/10	0.283 ± 0.16 μs	0.283 ± 0.17 μs	1
retrieve/blc/100	2 ± 0.15 μs	2.03 ± 0.17 μs	0.987
retrieve/blc/1000	15.8 ± 0.15 μs	15.8 ± 0.16 μs	0.999
retrieve/bll/1	0.216 ± 0.01 μs	0.213 ± 0.01 μs	1.01
retrieve/bll/10	0.36 ± 0.16 μs	0.364 ± 0.16 μs	0.989
retrieve/bll/100	2.09 ± 0.16 μs	2.12 ± 0.17 μs	0.983
retrieve/bll/1000	15.9 ± 0.14 μs	15.9 ± 0.17 μs	1
retrieve/mmp/1	1.57 ± 0.19 μs	1.57 ± 0.19 μs	1
retrieve/mmp/10	1.82 ± 0.19 μs	1.83 ± 0.2 μs	0.992
retrieve/mmp/100	4.6 ± 0.91 μs	4.73 ± 1 μs	0.972
retrieve/mmp/1000	24.7 ± 0.33 μs	24.4 ± 0.36 μs	1.01
retrieve/sa/1	0.211 ± 0.021 μs	0.208 ± 0.021 μs	1.01
retrieve/sa/10	0.374 ± 0.16 μs	0.374 ± 0.17 μs	1
retrieve/sa/100	2.29 ± 0.16 μs	2.31 ± 0.18 μs	0.988
retrieve/sa/1000	18.7 ± 0.16 μs	18.6 ± 0.17 μs	1
time_to_load	0.927 ± 0.012 s	0.932 ± 0.0019 s	0.995

Benchmark Plots

A plot of the benchmark results have been uploaded as an artifact to the workflow run for this PR.
Go to "Actions"->"Benchmark a pull request"->[the most recent run]->"Artifacts" (at the bottom).