Upgrade Lean to v4.11.0 (#11)

With v4.11.0, `batteries` is no longer needed.

By submitting this pull request, I confirm that my contribution is made
under the terms of the Apache 2.0 and MIT licenses.

Author: zhassan-aws

RustLeanModels/Basic.lean

@@ -1,6 +1,5 @@
 -- Copyright Kani Contributors
 -- SPDX-License-Identifier: Apache-2.0 OR MIT
-import Batteries.Data.List
 open String
 open List
 open Nat

lake-manifest.json

@@ -1,15 +1,5 @@
 {"version": "1.1.0",
  "packagesDir": ".lake/packages",
- "packages":
- [{"url": "https://github.com/leanprover-community/batteries",
-   "type": "git",
-   "subDir": null,
-   "scope": "",
-   "rev": "0f3e143dffdc3a591662f3401ce1d7a3405227c0",
-   "name": "batteries",
-   "manifestFile": "lake-manifest.json",
-   "inputRev": "0f3e143",
-   "inherited": false,
-   "configFile": "lakefile.lean"}],
+ "packages": [],
  "name": "«rust-lean-models»",
  "lakeDir": ".lake"}

lakefile.toml

@@ -4,10 +4,5 @@ defaultTargets = ["RustLeanModels"]
 [leanOptions]
 pp.unicode.fun = true
 
-[[require]]
-name = "batteries"
-git = "https://github.com/leanprover-community/batteries"
-rev = "0f3e143"
-
 [[lean_lib]]
 name = "RustLeanModels"

lean-toolchain

@@ -1 +1 @@
-leanprover/lean4:v4.10.0
+leanprover/lean4:v4.11.0