fixup! Comply with new lint rule for unused variables

Author: nicoddemus

testing/test_nodes.py

@@ -24,10 +24,10 @@ def test_node_direct_construction_deprecated() -> None:
     with pytest.raises(
         OutcomeException,
         match=(
-            r"Direct construction of _pytest.nodes.Node has been deprecated, please "
-            r"use _pytest.nodes.Node.from_parent.\nSee "
-            r"https://docs.pytest.org/en/stable/deprecations.html#node-construction-changed-to-node-from-parent"
-            r" for more details."
+            r"Direct construction of _pytest\.nodes\.Node has been deprecated, please "
+            r"use _pytest\.nodes\.Node\.from_parent.\nSee "
+            r"https://docs\.pytest\.org/en/stable/deprecations\.html#node-construction-changed-to-node-from-parent"
+            r" for more details\."
         ),
     ):
         nodes.Node(None, session=None)  # type: ignore[arg-type]

testing/test_pytester.py

@@ -799,7 +799,7 @@ def test_pytester_makefile_dot_prefixes_extension_with_warning(
 ) -> None:
     with pytest.raises(
         ValueError,
-        match=r"pytester.makefile expects a file extension, try .foo.bar instead of foo.bar",
+        match=r"pytester\.makefile expects a file extension, try \.foo\.bar instead of foo\.bar",
     ):
         pytester.makefile("foo.bar", "")