remove unused property from Compound: best_pXC50_activity

(replaced by cached best_activity)

ippisite/ippidb/models.py

@@ -857,12 +857,6 @@ class Compound(AutoFillableModel):
                 pfam_ids.add(bound_complex.complex.domain.pfam_id)
         return pfam_ids
 
-    @property
-    def best_pXC50_activity(self):
-        return self.compoundactivityresult_set.aggregate(Max("activity"))[
-            "activity__max"
-        ]
-
     @property
     def best_pXC50_compound_activity_result(self):
         best_pXC50_activity = self.best_activity