code: def test_radius_axis_options_remove_none():
      mock_data = [RadiusAxisItem(value="1"), RadiusAxisItem(value="2")]
      option = RadiusAxisOpts(data=mock_data)
      expected = {
          "data": mock_data,
          "nameGap": 15,
          "inverse": False,
          "scale": False,
          "splitNumber": 5,
          "minInterval": 0,
      }
      assert_equal(expected, remove_key_with_none_value(option.opts))
  
imports: from nose.tools import assert_equal
  from pyecharts.commons.utils import remove_key_with_none_value
  from pyecharts.options.global_options import AnimationOpts, AngleAxisItem, AngleAxisOpts, AriaLabelOpts, AriaDecalOpts, AxisTickOpts, CalendarYearLabelOpts, DatasetTransformOpts, InitOpts, ParallelAxisOpts, RadiusAxisItem, RadiusAxisOpts, ToolBoxFeatureBrushOpts, ToolBoxFeatureDataViewOpts, ToolBoxFeatureDataZoomOpts, ToolBoxFeatureMagicTypeOpts, ToolBoxFeatureOpts, ToolBoxFeatureRestoreOpts, ToolBoxFeatureSaveAsImageOpts, ToolboxOpts, BrushOpts, DataZoomOpts, LegendOpts, VisualMapOpts, TooltipOpts
label_desc: Use image node_id 18 for calling a global function with example usage: test_radius_axis_options_remove_none() without return types