cleanup

Author: xacrimon

Cargo.toml

@@ -93,8 +93,3 @@ codegen-units = 1
 # FIXME: LTO cannot be enabled for binaries in a workspace
 # <https://github.com/rust-lang/cargo/issues/9330>
 # lto = true
-
-[profile.release.package.rustc_mir_build]
-opt-level = 0
-[profile.release.package.rustc_driver]
-opt-level = 0