Revert "Numpy ufunc methods are also inferred as Uninferable"

This reverts commit b699ebb.

The fixes to context.path also appears to stop returning Uninferable for
numpy ufuncs.

Author: nelfin

tests/unittest_brain_numpy_core_umath.py

@@ -220,9 +220,7 @@ def test_numpy_core_umath_functions_return_type(self):
             with self.subTest(typ=func_):
                 inferred_values = list(self._inferred_numpy_func_call(func_))
                 self.assertTrue(
-                    len(inferred_values) == 1
-                    or len(inferred_values) == 2
-                    and inferred_values[-1].pytype() is util.Uninferable,
+                    len(inferred_values) == 1,
                     msg="Too much inferred values ({}) for {:s}".format(
                         inferred_values[-1].pytype(), func_
                     ),

tests/unittest_regrtest.py

@@ -99,7 +99,7 @@ def test_numpy_crash(self):
         astroid = builder.string_build(data, __name__, __file__)
         callfunc = astroid.body[1].value.func
         inferred = callfunc.inferred()
-        self.assertEqual(len(inferred), 2)
+        self.assertEqual(len(inferred), 1)
 
     def test_nameconstant(self):
         # used to fail for Python 3.4