Remove dead code

[prymitive]

No description provided.

[github-actions]

Benchmark diff:

goos: linux
goarch: amd64
pkg: github.com/cloudflare/pint/cmd/pint
cpu: AMD EPYC 7763 64-Core Processor                
              │   old.txt   │              new.txt               │
              │   sec/op    │   sec/op     vs base               │
FindEntries-4   86.66m ± 1%   87.00m ± 1%       ~ (p=0.280 n=10)
CheckRules-4    87.79m ± 1%   87.42m ± 1%       ~ (p=0.063 n=10)
geomean         87.22m        87.21m       -0.01%

              │   old.txt    │               new.txt               │
              │     B/op     │     B/op      vs base               │
FindEntries-4   54.00Mi ± 0%   54.00Mi ± 0%       ~ (p=0.393 n=10)
CheckRules-4    84.06Mi ± 0%   84.06Mi ± 0%       ~ (p=0.739 n=10)
geomean         67.37Mi        67.38Mi       +0.00%

              │   old.txt   │              new.txt               │
              │  allocs/op  │  allocs/op   vs base               │
FindEntries-4   434.0k ± 0%   434.0k ± 0%       ~ (p=0.726 n=10)
CheckRules-4    879.1k ± 0%   879.1k ± 0%       ~ (p=0.926 n=10)
geomean         617.7k        617.7k       +0.00%

[github-actions]

This pull request was validated by pint.

✔️ No problems found

Stats

Stat	Value
Version	v0.55.0-12-g01df83e
Number of rules parsed	4
Number of rules checked	0
Number of problems found	0
Number of offline checks	0
Number of online checks	0
Checks duration	0

Problems

No problems reported