small fix removing useless np array declaration

stardis/radiation_field/opacities/opacities_solvers/base.py

@@ -548,9 +548,7 @@ def calc_alan_entries(
                     line_index, depth_point_index
                 ]  # Scale by alpha of the line
             ) / d_nu
-            line_broadening_range = np.array(
-                [10, line_broadening]
-            ).max()  # This is a placeholder
+            line_broadening_range = max(10.0, line_broadening)  # This is a placeholder
 
             lower_freq_index = max(
                 closest_frequency_index - int(line_broadening_range), 0