treewide: remove unused with statements from maintainer lists

$ find -type f -name '*.nix' -print0 | xargs -P "$(nproc)" -0 sed -i \
  -e 's!with lib.maintainers; \[ *\];![ ];!' \
  -e 's!with maintainers; \[ *\];![ ];!'

pkgs/development/python2-modules/attrs/default.nix

@@ -36,6 +36,6 @@ buildPythonPackage rec {
     description = "Python attributes without boilerplate";
     homepage = "https://github.com/hynek/attrs";
     license = licenses.mit;
-    maintainers = with maintainers; [ ];
+    maintainers = [ ];
   };
 }

pkgs/development/python2-modules/futures/default.nix

@@ -22,6 +22,6 @@ buildPythonPackage rec {
     description = "Backport of the concurrent.futures package from Python 3.2";
     homepage = "https://github.com/agronholm/pythonfutures";
     license = licenses.bsd2;
-    maintainers = with maintainers; [  ];
+    maintainers = [ ];
   };
 }

pkgs/development/python2-modules/pluggy/default.nix

@@ -29,6 +29,6 @@ buildPythonPackage rec {
     description = "Plugin and hook calling mechanisms for Python";
     homepage = "https://github.com/pytest-dev/pluggy";
     license = lib.licenses.mit;
-    maintainers = with lib.maintainers; [ ];
+    maintainers = [ ];
   };
 }

pkgs/development/python2-modules/pygobject/default.nix

@@ -43,6 +43,6 @@ buildPythonPackage rec {
     homepage = "https://pygobject.readthedocs.io/";
     description = "Python bindings for GLib";
     license = licenses.gpl2;
-    maintainers = with maintainers; [ ];
+    maintainers = [ ];
   };
 }

pkgs/development/python2-modules/setuptools-scm/default.nix

@@ -19,6 +19,6 @@ buildPythonPackage rec {
     homepage = "https://github.com/pypa/setuptools_scm/";
     description = "Handles managing your python package versions in scm metadata";
     license = licenses.mit;
-    maintainers = with maintainers; [ ];
+    maintainers = [ ];
   };
 }