polygen fixups

Author: Matthias Koeppe

src/sage/rings/number_field/number_field_rel.py

@@ -2192,7 +2192,6 @@ def logarithmic_embedding(self, prec=53):
 
         ::
 
-            sage: x = polygen(ZZ, 'x')
             sage: K.<i> = NumberField(x^2 + 1)
             sage: t = K['t'].gen()
             sage: L.<a> = K.extension(t^4 - i)