Fix flake8 errors

qf_lib/common/utils/miscellaneous/parabolic_sar.py

@@ -12,7 +12,6 @@
 #     See the License for the specific language governing permissions and
 #     limitations under the License.
 
-import numpy as np
 from qf_lib.common.enums.price_field import PriceField
 from qf_lib.containers.dataframe.prices_dataframe import PricesDataFrame
 from qf_lib.containers.series.qf_series import QFSeries
@@ -69,16 +68,3 @@ def parabolic_sar(df: PricesDataFrame, acceleration=0.02, max_acceleration=0.2):
         sar_values.append(sar)
 
     return QFSeries(sar_values, index=df.index[1:])
-
-
-if __name__ == '__main__':
-    dummy_price_data_with_nan = {
-        PriceField.Low: [1.1, 1.4, 2.6, 3.4, None, 5.1, 4.4, 3.1],
-        PriceField.High: [None, 2.2, None, 6.5, 7.1, 7.4, 7.6, 5.],
-        PriceField.Close: [None, 1.2, 3.5, 5.3, 7.1, 6.3, 6.5, 4.2],
-    }
-    dummy_prices_dataframe_with_nan = PricesDataFrame(dummy_price_data_with_nan)
-
-    out = parabolic_sar(dummy_prices_dataframe_with_nan)
-    for i in out:
-        print(i)