Update test_variable.py

Author: Routhleck

Diff for: brainpy/_src/math/object_transform/tests/test_variable.py

@@ -36,8 +36,6 @@ def fff(self):
 
     print()
     a = A()
-    temp = a.f1()
-    print(temp)
     self.assertTrue(bm.all(a.f1() == 2.))
     self.assertTrue(len(a.f1._dyn_vars) == 2)
     print(a.f2())