remove incorrect init in dem plugin (#168)

Co-authored-by: Emma Ai <[email protected]>

odc/stats/plugins/lc_veg_class_a1.py

@@ -2,7 +2,7 @@
 Plugin of Module A1 in LandCover PipeLine
 """
 
-from typing import Tuple, Optional, Dict
+from typing import Optional, Dict
 
 import numpy as np
 import xarray as xr
@@ -19,13 +19,6 @@ class StatsDem(StatsPluginInterface):
     VERSION = "0.0.1"
     PRODUCT_FAMILY = "lccs"
 
-    def __init__(
-        self,
-        measurements: Optional[Tuple[str, ...]] = None,
-        **kwargs,
-    ):
-        super().__init__(**kwargs)
-
     def native_transform(self, xx):
         # reproject cannot work with nodata being int for float
         # hence convert to nan