[py] Fix py_release target

Author: davehunt

Rakefile

@@ -360,10 +360,7 @@ task :py_docs => "//py:docs"
 task :py_install =>  "//py:install"
 
 task :py_release => :py_prep_for_install_release do
-    sh "grep -v test setup.py > setup_release.py; mv setup_release.py setup.py"
-    sh "python setup.py sdist upload"
-    sh "python setup.py bdist_wheel upload"
-    sh "git checkout setup.py"
+    sh "python setup.py sdist bdist_wheel upload"
 end
 
 file "cpp/iedriver/sizzle.h" => [ "//third_party/js/sizzle:sizzle:header" ] do