fix(classname): Classname is no longer needed param

Author: ehdsouza

ibm_cloud_sdk_core/base_service.py

@@ -205,10 +205,9 @@ def prepare_request(self, method, url, headers=None,
 
 
     @staticmethod
-    def _convert_model(val, classname=None):
-        if classname is not None:
-            if isinstance(val, str):
-                val = json_import.loads(val)
+    def _convert_model(val):
+        if isinstance(val, str):
+            val = json_import.loads(val)
         if hasattr(val, "_to_dict"):
             return val._to_dict()
         return val

test/test_base_service.py

@@ -343,7 +343,7 @@ def _from_dict(cls, _dict):
     model1 = service._convert_model(mock)
     assert model1 == {'x': 'foo'}
 
-    model2 = service._convert_model("{\"x\": \"foo\"}", MockModel)
+    model2 = service._convert_model("{\"x\": \"foo\"}")
     assert model2 is not None
     assert model2['x'] == 'foo'