[OpenVINO] Remove deprecated openvino.runtime module (#1533)

* Remove deprecated openvino.runtime

* Update optimum/intel/openvino/quantization.py

Co-authored-by: Nikita Savelyev <[email protected]>

---------

Co-authored-by: Nikita Savelyev <[email protected]>

Author: almilosz

optimum/intel/openvino/quantization.py

@@ -1179,7 +1179,7 @@ def __init__(
             logger.warning("The `task` argument is ignored and will be removed in optimum-intel v1.27")
 
     @property
-    def task(self) -> Dict[str, Union[openvino.Model, openvino.runtime.CompiledModel]]:
+    def task(self) -> str:
         logger.warning("The `task` attribute is deprecated and will be removed in v1.27.")
         return self._task