perf: 优化公钥设置，并删掉一部分不用的 html

apps/users/models/user.py

@@ -66,13 +66,9 @@ class AuthMixin:
     def can_update_ssh_key(self):
         return self.can_use_ssh_key_login()
 
-    def can_use_ssh_key_login(self):
-        if not settings.TERMINAL_PUBLIC_KEY_AUTH:
-            return False
-        if self.is_local or settings.TERMINAL_ONLY_SOURCE_LOCAL_CAN_PUBLIC_KEY_AUTH:
-            return True
-        else:
-            return False
+    @staticmethod
+    def can_use_ssh_key_login():
+        return settings.TERMINAL_PUBLIC_KEY_AUTH
 
     def is_public_key_valid(self):
         """