runtime-rs: delete vergen dependency

vergen is a build dependency, but it is not being used.
we are processing ver/commit hash by make command, but not by vergen.

Fixes: #4920

Signed-off-by: Bin Liu <bin@hyper.sh>

src/runtime-rs/crates/shim/Cargo.toml

@@ -36,9 +36,6 @@ logging = { path = "../../../libs/logging"}
 oci = { path = "../../../libs/oci" }
 service = { path = "../service" }
 
-[build-dependencies]
-vergen = { version = "6", default-features = false, features = ["build", "git", "rustc"] }
-
 [dev-dependencies]
 tempfile = "3.2.0"
 rand = "0.8.4"

src/runtime-rs/crates/shim/build.rs

@@ -1,12 +0,0 @@
-// Copyright (c) 2019-2022 Alibaba Cloud
-// Copyright (c) 2019-2022 Ant Group
-//
-// SPDX-License-Identifier: Apache-2.0
-//
-
-use vergen::{vergen, Config};
-
-fn main() {
-    // Generate the default 'cargo:' instruction output
-    vergen(Config::default()).unwrap();
-}