Drop test indirection required only until Rust 1.54.

Cargo.toml

@@ -48,7 +48,6 @@ chrono = { version = "0.4" }
 criterion = "0.3.5"
 # Required for "and $N others" normalization
 trybuild = ">=1.0.70"
-rustversion = "1.0"
 # 1.0.0 requires Rust 1.50
 proptest = { version = "0.10.1", default-features = false, features = ["std"] }
 send_wrapper = "0.6"

tests/test_macro_docs.rs

@@ -1,8 +1,10 @@
+#![cfg(feature = "macros")]
+
 use pyo3::prelude::*;
 use pyo3::types::IntoPyDict;
 
 #[macro_use]
-#[path = "../common.rs"]
+#[path = "common.rs"]
 mod common;
 
 #[pyclass]

tests/test_not_msrv.rs

@@ -1,11 +0,0 @@
-#![cfg(feature = "macros")]
-
-//! Functionality which is not only not supported on MSRV,
-//! but can't even be cfg-ed out on MSRV because the compiler doesn't support
-//! the syntax.
-
-#[rustversion::since(1.54)]
-mod requires_1_54 {
-
-    include!("not_msrv/requires_1_54.rs");
-}