code: def _remove_na(l):
      """Remove NA values. Should work for lists, arrays, series."""
      return Series(l).dropna().values
  
file_path: joypy/joypy/joyplot.py
imports: import numpy
  from scipy.stats import gaussian_kde
  import scipy.stats
  import warnings
  from pandas import DataFrame, Series
  from pandas.core.dtypes.common import is_number
  from pandas.core.groupby import DataFrameGroupBy
  from matplotlib import pyplot
  from warnings import warn
label_desc: Use image node_id 5 for calling a global function with example usage: _remove_na(l) and returns: Series