removed mock expectation call to avoid NPE in tests

Author: HugoMario

modules/swagger-codegen/src/test/java/io/swagger/codegen/python/PythonClientOptionsTest.java

@@ -26,7 +26,6 @@ protected CodegenConfig getCodegenConfig() {
     @Override
     protected void setExpectations() {
         new Expectations(clientCodegen) {{
-            clientCodegen.setPackageName(PythonClientOptionsProvider.PACKAGE_NAME_VALUE);
             clientCodegen.setProjectName(PythonClientOptionsProvider.PROJECT_NAME_VALUE);
             clientCodegen.setPackageVersion(PythonClientOptionsProvider.PACKAGE_VERSION_VALUE);
             clientCodegen.setPackageUrl(PythonClientOptionsProvider.PACKAGE_URL_VALUE);