Update qqbar.py

Author: RuchitJagodara

src/sage/rings/qqbar.py

@@ -1646,16 +1646,6 @@ def _element_constructor_(self, x):
             True
             sage: pi in QQbar                                                           # needs sage.symbolic
             False
-
-        TESTS:
-
-        Check if :trac:`12745` is fixed::
-
-            sage: x = exp(2*I*pi/7) + exp(-2*I*pi/7)
-            sage: QQbar(x) in AA
-            True
-            sage: AA(x)
-            1.246979603717467?
         """
         if isinstance(x, AlgebraicNumber):
             return x