refactor(levm): remove unused variants from enum

[iovoid]

Motivation

The PrecompileError enum had two variants that were not in use. One of them, KzgError, contained a string which caused the size of the PrecompileError enum to increase.

Description

This PR removes the unused variants, causing both PrecompileError and ExceptionalHalt (which used PrecompileError) to shrink from 24 bytes to just one.

[github-actions]

Lines of code report

Total lines added: 0
Total lines removed: 4
Total lines changed: 4

Detailed view

+-------------------------------------+-------+------+
| File                                | Lines | Diff |
+-------------------------------------+-------+------+
| ethrex/crates/vm/levm/src/errors.rs | 230   | -4   |
+-------------------------------------+-------+------+

[github-actions]

Benchmark Results Comparison

No significant difference was registered for any benchmark run.

Detailed Results

Benchmark Results: BubbleSort

Command	Mean [s]	Min [s]	Max [s]	Relative
main_revm_BubbleSort	2.787 ± 0.013	2.769	2.818	1.00
main_levm_BubbleSort	2.863 ± 0.013	2.851	2.896	1.03 ± 0.01
pr_revm_BubbleSort	2.794 ± 0.031	2.769	2.876	1.00 ± 0.01
pr_levm_BubbleSort	2.864 ± 0.019	2.853	2.917	1.03 ± 0.01

Benchmark Results: ERC20Approval

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_ERC20Approval	923.7 ± 12.9	912.7	943.6	1.01 ± 0.02
main_levm_ERC20Approval	1015.6 ± 3.9	1011.0	1023.7	1.11 ± 0.01
pr_revm_ERC20Approval	916.3 ± 8.7	909.3	938.9	1.00
pr_levm_ERC20Approval	1019.1 ± 5.8	1012.9	1028.1	1.11 ± 0.01

Benchmark Results: ERC20Mint

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_ERC20Mint	121.2 ± 1.7	119.9	124.8	1.00
main_levm_ERC20Mint	148.7 ± 1.4	147.3	150.9	1.23 ± 0.02
pr_revm_ERC20Mint	121.4 ± 2.0	120.0	125.1	1.00 ± 0.02
pr_levm_ERC20Mint	148.1 ± 0.7	147.2	149.4	1.22 ± 0.02

Benchmark Results: ERC20Transfer

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_ERC20Transfer	217.0 ± 3.2	214.7	225.3	1.00 ± 0.02
main_levm_ERC20Transfer	258.9 ± 1.9	256.8	262.4	1.19 ± 0.02
pr_revm_ERC20Transfer	217.0 ± 2.4	215.0	222.7	1.00
pr_levm_ERC20Transfer	259.1 ± 1.5	256.8	260.9	1.19 ± 0.02

Benchmark Results: Factorial

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_Factorial	184.6 ± 1.3	183.0	187.2	1.00
main_levm_Factorial	217.4 ± 2.8	215.7	225.2	1.18 ± 0.02
pr_revm_Factorial	184.7 ± 1.5	183.0	188.0	1.00 ± 0.01
pr_levm_Factorial	216.9 ± 2.9	215.1	225.1	1.18 ± 0.02

Benchmark Results: FactorialRecursive

Command	Mean [s]	Min [s]	Max [s]	Relative
main_revm_FactorialRecursive	1.337 ± 0.034	1.258	1.367	1.00
main_levm_FactorialRecursive	6.329 ± 0.068	6.254	6.473	4.74 ± 0.13
pr_revm_FactorialRecursive	1.345 ± 0.022	1.321	1.378	1.01 ± 0.03
pr_levm_FactorialRecursive	6.294 ± 0.070	6.173	6.398	4.71 ± 0.13

Benchmark Results: Fibonacci

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_Fibonacci	154.7 ± 4.5	152.1	166.8	1.00 ± 0.04
main_levm_Fibonacci	202.0 ± 5.0	197.5	209.3	1.31 ± 0.04
pr_revm_Fibonacci	154.2 ± 3.3	151.6	162.5	1.00
pr_levm_Fibonacci	199.2 ± 2.4	197.2	203.1	1.29 ± 0.03

Benchmark Results: FibonacciRecursive

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_FibonacciRecursive	722.5 ± 7.5	712.6	738.0	1.15 ± 0.02
main_levm_FibonacciRecursive	631.2 ± 6.9	621.5	647.0	1.00 ± 0.01
pr_revm_FibonacciRecursive	718.5 ± 5.1	710.5	724.9	1.14 ± 0.01
pr_levm_FibonacciRecursive	630.9 ± 5.2	623.0	641.9	1.00

Benchmark Results: ManyHashes

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_ManyHashes	7.9 ± 0.3	7.7	8.7	1.02 ± 0.04
main_levm_ManyHashes	8.5 ± 0.4	8.3	9.4	1.10 ± 0.05
pr_revm_ManyHashes	7.8 ± 0.0	7.7	7.8	1.00
pr_levm_ManyHashes	8.5 ± 0.1	8.4	8.7	1.09 ± 0.02

Benchmark Results: MstoreBench

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_MstoreBench	261.2 ± 3.2	258.0	268.6	1.22 ± 0.02
main_levm_MstoreBench	213.3 ± 1.1	211.8	215.8	1.00
pr_revm_MstoreBench	258.4 ± 0.6	257.6	259.6	1.21 ± 0.01
pr_levm_MstoreBench	213.7 ± 2.5	211.0	219.1	1.00 ± 0.01

Benchmark Results: Push

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_Push	243.1 ± 3.9	240.6	253.4	1.00 ± 0.02
main_levm_Push	243.2 ± 1.5	241.4	246.5	1.00 ± 0.01
pr_revm_Push	242.6 ± 0.7	241.5	243.3	1.00
pr_levm_Push	247.1 ± 7.1	241.9	260.9	1.02 ± 0.03

Benchmark Results: SstoreBench_no_opt

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
main_revm_SstoreBench_no_opt	143.8 ± 3.6	142.2	153.8	1.82 ± 0.05
main_levm_SstoreBench_no_opt	78.8 ± 1.1	78.0	82.0	1.00
pr_revm_SstoreBench_no_opt	144.5 ± 4.5	141.8	156.5	1.83 ± 0.06
pr_levm_SstoreBench_no_opt	79.0 ± 2.0	77.4	84.5	1.00 ± 0.03