pythonPackages: remove old unmaintained gsutil and dependencies

5bd5d2d9be5826793db8270befd1b064dcb49373 added gsutil and dependencies.
Since then, only f5680cdd49ef437da3faf3f9e1c999b0fef29b00 touched it.
There have been many updates since then of these packages. Because it is
not maintained I am removing this.

pkgs/top-level/python-packages.nix

···
     };
   };
 
-  boto-230 = buildPythonPackage rec {
-    name = "boto-2.30.0";
-    disabled = ! isPy27;
-    src = pkgs.fetchurl {
-      url = mirror://pypi/b/boto/boto-2.30.0.tar.gz;
-      sha256 = "12gl8azmx1vv8dbv9jhnsbhjpc2dd1ng0jlbcg734k6ggwq1h6hh";
-    };
-    doCheck = false;
-    meta = {
-      homepage = https://github.com/boto/boto;
-      license = licenses.mit;
-      description = "Python interface to Amazon Web Services";
-    };
-  };
-
-  gcs-oauth2-boto-plugin = buildPythonPackage rec {
-    name = "gcs-oauth2-boto-plugin-1.8";
-    disabled = ! isPy27;
-    src = pkgs.fetchurl {
-      url = mirror://pypi/g/gcs-oauth2-boto-plugin/gcs-oauth2-boto-plugin-1.8.tar.gz;
-      sha256 = "0jy62y5bmaf1mb735lqwry1s5nx2qqrxvl5sxip9yg4miih3qkyb";
-    };
-    propagatedBuildInputs = with self; [ boto-230 httplib2 google_api_python_client retry_decorator pyopenssl socksipy-branch ];
-    meta = {
-      homepage = https://developers.google.com/storage/docs/gspythonlibrary;
-      description = "Provides OAuth 2.0 credentials that can be used with Google Cloud Storage";
-      license = licenses.asl20;
-    };
-  };
-
-  gsutil = buildPythonPackage rec {
-    name = "gsutil-4.6";
-    disabled = ! isPy27;
-    meta = {
-      homepage = https://developers.google.com/storage/docs/gsutil;
-      description = "Google Cloud Storage Tool";
-      maintainers = with maintainers; [ roconnor ];
-      license = licenses.asl20;
-    };
-    doCheck = false;
-
-    src = pkgs.fetchurl {
-      url = mirror://pypi/g/gsutil/gsutil-4.6.tar.gz;
-      sha256 = "1i0clm60162rbk45ljr8nsw4ndkzjnwb7r440shcqjrvw8jq49mn";
-    };
-
-    propagatedBuildInputs = with self; [ boto-230 crcmod httplib2 gcs-oauth2-boto-plugin google_api_python_client gflags
-                                         retry_decorator pyopenssl socksipy-branch crcmod ];
-  };
-
   svg2tikz = self.buildPythonPackage {
     name = "svg2tikz-1.0.0";
     disabled = ! isPy27;