bootstrap miri: remove no longer used env var

diff --git a/src/bootstrap/test.rs b/src/bootstrap/test.rs
index 58dc8ffc17da25df49ce871d0670f22b940422ff..f2a7d1d00cf2856574486f710d3272a62dbddd6f 100644 (file)
--- a/src/bootstrap/test.rs
+++ b/src/bootstrap/test.rs
@@ -384,9 +384,6 @@ fn run(self, builder: &Builder<'_>) {
             );
             cargo.arg("--bin").arg("cargo-miri").arg("--").arg("miri").arg("setup");
 
-            // Tell `cargo miri` not to worry about the sysroot mismatch (we built with
-            // stage1 but run with stage2).
-            cargo.env("MIRI_SKIP_SYSROOT_CHECK", "1");
             // Tell `cargo miri setup` where to find the sources.
             cargo.env("XARGO_RUST_SRC", builder.src.join("src"));
             // Debug things.