[App] Expression and Extension: remove unused includes

src/App/Expression.h

@@ -23,17 +23,17 @@
 #ifndef EXPRESSION_H
 #define EXPRESSION_H
 
+#include <deque>
+#include <set>
 #include <string>
-#include <tuple>
-#include <Base/Exception.h>
-#include <Base/Unit.h>
+
 #include <App/PropertyLinks.h>
 #include <App/ObjectIdentifier.h>
+#include <App/Range.h>
+#include <Base/Exception.h>
 #include <Base/BaseClass.h>
 #include <Base/Quantity.h>
-#include <set>
-#include <deque>
-#include <App/Range.h>
+
 
 #if defined(__clang__)
 # pragma clang diagnostic push