perf: remove duplicated check (#117)

* perf: remove duplicated check

Signed-off-by: Zxilly <zhouxinyu1001@gmail.com>

* perf: remove duplicated check

Signed-off-by: Zxilly <zhouxinyu1001@gmail.com>

Author: Zxilly

casbin/model/policy.py

@@ -91,11 +91,6 @@ def add_policies(self,sec,ptype,rules):
     def remove_policy(self, sec, ptype, rule):
         """removes a policy rule from the model."""
 
-        if sec not in self.model.keys():
-            return False
-        if ptype not in self.model[sec]:
-            return False
-
         if not self.has_policy(sec, ptype, rule):
             return False
 
@@ -106,11 +101,6 @@ def remove_policy(self, sec, ptype, rule):
     def remove_policies(self, sec, ptype, rules):
         """RemovePolicies removes policy rules from the model."""
 
-        if sec not in self.model.keys():
-            return False
-        if ptype not in self.model[sec]:
-            return False
-
         for rule in rules:
             if not self.has_policy(sec,ptype,rule):
                 return False