Get rid of wasm-opt crate dependency

Author: kateinoigakukun

Cargo.lock

@@ -17,4 +17,4 @@ wasi-vfs-cli = { git = "https://github.com/kateinoigakukun/wasi-vfs/", tag = "0.
 structopt = "0.3.26"
 wit-component = "0.203.0"
 wasm-compose = "0.203.0"
-wasi-virt = { git = "https://github.com/bytecodealliance/wasi-virt", rev = "b2581ff6e993c7c3cb6f5d899977bbce3d4c6c60" }
+wasi-virt = { git = "https://github.com/bytecodealliance/wasi-virt", rev = "refs/pull/63/head", default-features = false }