[FIX] fix bugs in create_semantic_specification

learnware/client/learnware_client.py

@@ -265,11 +265,7 @@ class LearnwareClient:
         semantic_specification["Input"] = input_description
         semantic_specification["Output"] = output_description
 
-        if self._check_semantic_specification(semantic_specification):
-            return semantic_specification
-        else:
-            logger.error("The parameters passed in create_semantic_specification() are illegal!")
-            return None
+        return semantic_specification
 
     def list_semantic_specification_values(self, key: SemanticSpecificationKey):
         url = f"{self.host}/engine/semantic_specification"