defaultcomponents: do not include headers which are not used

git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@8948 2fb0f335-1f38-0410-981e-8018bf24f1b0

dumux/material/fluidsystems/defaultcomponents.hh

@@ -33,17 +33,13 @@
 
 #include <dumux/common/basicproperties.hh>
 
+#include <dumux/material/components/h2o.hh>
+#include <dumux/material/components/n2.hh>
+#include <dumux/material/components/o2.hh>
+#include <dumux/material/components/h2.hh>
 #include <dumux/material/components/ch4.hh>
 #include <dumux/material/components/simpleco2.hh>
-#include <dumux/material/components/h2.hh>
-#include <dumux/material/components/o2.hh>
-#include <dumux/material/components/oil.hh>
-#include <dumux/material/components/n2.hh>
-#include <dumux/material/components/h2o.hh>
 #include <dumux/material/components/simpleh2o.hh>
-#include <dumux/material/components/simplednapl.hh>
-#include <dumux/material/components/benzene.hh>
-#include <dumux/material/components/mesitylene.hh>
 #include <dumux/material/components/brine.hh>
 #include <dumux/material/components/tabulatedcomponent.hh>