remove 'mode' from render() for all dummy envs (test suite)

test/test_black_box.py

@@ -41,7 +41,7 @@ class ToyEnv(gym.Env):
         obs, reward, terminated, truncated, info = np.array([-1]), 1, False, False, {}
         return obs, reward, terminated, truncated, info
 
-    def render(self, mode="human"):
+    def render(self):
         pass
 
 

test/test_fancy_registry.py

@@ -33,7 +33,7 @@ class ToyEnv(gym.Env):
         obs, reward, terminated, truncated, info = np.array([-1]), 1, False, False, {}
         return obs, reward, terminated, truncated, info
 
-    def render(self, mode="human"):
+    def render(self):
         pass
 
 

test/test_replanning_sequencing.py

@@ -37,7 +37,7 @@ class ToyEnv(gym.Env):
         obs, reward, terminated, truncated, info = np.array([-1]), 1, False, False, {}
         return obs, reward, terminated, truncated, info
 
-    def render(self, mode="human"):
+    def render(self):
         pass