Remove filesystem.alloc_read_buffers()

[wcampbell0x2a]

No description provided.

[github-actions]

Benchmark for 048ef74

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Test	Base	PR	%
only_read/netgear_ax6100v2	2.8±0.00ms	2.8±0.06ms	0.00%
only_read/tplink_ax1800	7.2±0.01ms	7.1±0.00ms	-1.39%
unsquashfs/full	11.2±0.14ms	11.1±0.12ms	-0.89%
unsquashfs/full-path-filter	7.9±0.08ms	7.8±0.05ms	-1.27%
unsquashfs/list	8.2±0.05ms	8.1±0.10ms	-1.22%
unsquashfs/list-path-filter	7.3±0.04ms	7.2±0.06ms	-1.37%
write_read/netgear_ax6100v2	1273.5±2.23ms	1272.7±2.13ms	-0.06%
write_read/tplink_ax1800	7.1±0.07s	7.0±0.01s	-1.41%

[github-actions]

Benchmark for 47bb16d

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Test	Base	PR	%
only_read/netgear_ax6100v2	2.8±0.01ms	2.7±0.00ms	-3.57%
only_read/tplink_ax1800	7.2±0.02ms	7.1±0.01ms	-1.39%
unsquashfs/full	11.3±0.16ms	11.2±0.20ms	-0.88%
unsquashfs/full-path-filter	7.9±0.07ms	7.9±0.10ms	0.00%
unsquashfs/list	8.2±0.10ms	8.2±0.06ms	0.00%
unsquashfs/list-path-filter	7.3±0.04ms	7.3±0.03ms	0.00%
write_read/netgear_ax6100v2	1286.2±8.42ms	1283.2±2.95ms	-0.23%
write_read/tplink_ax1800	7.1±0.06s	7.3±0.23s	+2.82%