cleanup opcodeCost gen

Author: mihaicalinluca

vmhost/vmhooks/generate/eiGenWriteRustOpcodeCost.go

@@ -9,42 +9,7 @@ import (
 
 const useStatements = `
 use serde::{Deserialize, Serialize};
-use std::fs;
-use std::path::Path;
 
-use crate::GasSchedule;
-
-`
-
-const configStruct = `
-#[derive(Deserialize)]
-struct Config {
-    #[serde(rename = "WASMOpcodeCost")]
-    wasm_opcode_cost: OpcodeCost,
-}
-
-`
-
-const implBlock = `impl OpcodeCost {
-    pub fn new(gas_schedule: GasSchedule) -> Self {
-        let schedule_path = Path::new(env!("CARGO_MANIFEST_DIR"))
-            .join("schedules")
-            .join(gas_schedule.to_string());
-
-        Self::from_file(schedule_path).unwrap()
-    }
-
-    pub fn from_file<P: AsRef<Path>>(path: P) -> Result<Self, std::io::Error> {
-        let content = fs::read_to_string(path)?;
-        Self::from_toml_str(&content)
-            .map_err(|e| std::io::Error::new(std::io::ErrorKind::InvalidData, e.to_string()))
-    }
-
-    pub fn from_toml_str(content: &str) -> Result<Self, toml::de::Error> {
-        let config: Config = toml::from_str(content)?;
-        Ok(config.wasm_opcode_cost)
-    }
-}
 `
 
 // WriteRustOpcodeCost generates code for opcode_cost.rs
@@ -75,6 +40,4 @@ func WriteRustOpcodeCost(out *eiGenWriter) {
 		out.WriteString(fmt.Sprintf("    pub opcode_%s: u32,\n", strings.ToLower(line)))
 	}
 	out.WriteString("}\n")
-	out.WriteString(configStruct)
-	out.WriteString(implBlock)
 }