Update echopype/consolidate/ek_depth_utils.py

Co-authored-by: Wu-Jung Lee <leewujung@gmail.com>

Author: ctuguinay

echopype/consolidate/ek_depth_utils.py

@@ -109,6 +109,4 @@ def ek_use_beam_angles(beam_ds: xr.Dataset) -> xr.DataArray:
 
     # For channels with near-zero norm, we return NaN. Otherwise, we return the normalized
     # z component.
-    normed_z = xr.where(norm < tolerance, np.nan, beam_direction_z / norm)
-    echo_range_scaling = normed_z
-    return echo_range_scaling
+return xr.where(norm < tolerance, np.nan, beam_direction_z / norm)