ProjectExplorer: Remove unnecessary setMacroExpander call

Change-Id: I8ef1cdc70d50516653c35789a1b1d795137912dc
Reviewed-by: David Schulz <david.schulz@qt.io>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/projectexplorer/workspaceproject.cpp

@@ -377,7 +377,6 @@ public:
         };
 
         arguments.setLabelText(Tr::tr("Arguments:"));
-        arguments.setMacroExpander(macroExpander());
         arguments.setArguments(argumentsAsString());
         arguments.setSettingsKey("Workspace.RunConfiguration.Arguments");