Remove parameter escape, as now it's handled by client

Author: HardNorth

pytest_reportportal/service.py

@@ -743,9 +743,7 @@ def _get_parameters(self, item) -> Optional[dict[str, Any]]:
         :return: dict of params
         """
         params = item.callspec.params if hasattr(item, "callspec") else None
-        if not params:
-            return None
-        return {str(k): v.replace("\0", "\\0") if isinstance(v, str) else v for k, v in params.items()}
+        return params
 
     def _get_parameters_indices(self, item) -> Optional[dict[str, Any]]:
         """