Revert "this was set from two places, remove it from here"

This reverts commit 5d8fbcc.

src/core/mesh/qgsmeshlayerrenderer.cpp

@@ -188,6 +188,9 @@ QgsMeshLayerRenderer::QgsMeshLayerRenderer(
             layerStatistics->setMaximum( 0, max );
             layerStatistics->setMinimum( 0, min );
 
+            scalarRendererSettings.setClassificationMinimumMaximum( min, max );
+            mRendererSettings.setScalarSettings( activeDatasetIndex.group(), scalarRendererSettings );
+
             appendRenderedItemDetails( layerStatistics );
           }
         }