formatting fixes

meanas/fdfd/functional.py

@@ -219,4 +219,3 @@ def poynting_e_cross_h(dxes: dx_lists_t):
         s[2] = numpy.roll(ex, -1, axis=2) * hy - numpy.roll(ey, -1, axis=2) * hx
         return s
     return exh
-

meanas/fdtd/boundaries.py

@@ -37,7 +37,7 @@ def conducting_boundary(direction: int,
 
         return en, hn
 
-    elif polarity > 0:
+    if polarity > 0:
         boundary_slice = [slice(None)] * 3
         shifted1_slice = [slice(None)] * 3
         shifted2_slice = [slice(None)] * 3
@@ -62,7 +62,4 @@ def conducting_boundary(direction: int,
 
         return ep, hp
 
-    else:
     raise Exception('Bad polarity: {}'.format(polarity))
-
-