Delete rust-toolchain setup

Author: lucic71

tests/lit/lit/formats/Cpp2RustTest.py

@@ -11,7 +11,6 @@
 import os
 import re
 import shutil
-import tomli
 
 
 MODELS = ("refcount", "unsafe")
@@ -199,18 +198,13 @@ def build_cpp(self):
 
     def build_rust(self):
         exp = self.expectations
-        rust_version = read_rust_version()
         self.pkg_name = "test_" + re.sub(r"[^a-zA-Z0-9_]", "_", self.tmp_dir.name)
 
-        (self.tmp_dir / "rust-toolchain.toml").write_text(
-            f'[toolchain]\nchannel = "{rust_version}"\n'
-        )
         (self.tmp_dir / "Cargo.toml").write_text(f"""
 [package]
 name = "{self.pkg_name}"
 version = "0.1.0"
 edition = "2021"
-rust-version = "{rust_version}"
 
 [[bin]]
 name = "{self.pkg_name}"
@@ -331,11 +325,6 @@ def getTestsInDirectory(self, testSuite, path_in_suite, litConfig, localConfig):
                     yield t
 
 
-def read_rust_version():
-    toolchain_path = Path(__file__).parent / "../../../../libcc2rs/rust-toolchain.toml"
-    return tomli.loads(toolchain_path.read_text())["toolchain"]["channel"]
-
-
 def shared_target_dir():
     return (Path(__file__).parent / "../../../../build/tmp/cargo-target").resolve()