cargo-miri already finds the sysroot on its own

Author: oli-obk

miri

@@ -215,7 +215,6 @@ fmt)
         | xargs rustfmt +$TOOLCHAIN --edition=2021 --config-path "$MIRIDIR/rustfmt.toml" "$@"
     ;;
 cargo)
-    find_sysroot
     $CARGO run $CARGO_BUILD_FLAGS --manifest-path "$MIRIDIR"/cargo-miri/Cargo.toml -- miri "$@"
     ;;
 clippy)