Haskell: Delay settings creation

Change-Id: I45666aa8aab1caa776d2f9f23455dc6a92384018
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

src/plugins/haskell/haskellplugin.cpp

@@ -9,7 +9,6 @@
 #include "haskellmanager.h"
 #include "haskellproject.h"
 #include "haskellrunconfiguration.h"
-#include "haskellsettings.h"
 #include "haskelltr.h"
 #include "stackbuildstep.h"
 
@@ -31,7 +30,6 @@ namespace Internal {
 class HaskellPluginPrivate
 {
 public:
-    HaskellSettings settings;
     HaskellEditorFactory editorFactory;
     HaskellBuildConfigurationFactory buildConfigFactory;
     StackBuildStepFactory stackBuildStepFactory;