[cleanup][doc] Remove unused macro definitions

doc/doxygen/Doxylocal

@@ -6,10 +6,6 @@ PROJECT_BRIEF         = "DUNE for Multi-{Phase, Component, Scale, Physics, ...}
 PROJECT_LOGO          = @top_srcdir@/doc/logo/dumux_logo_small.png
 PROJECT_NUMBER        = @DUNE_MOD_VERSION@
 
-PREDEFINED            += "NEW_PROP_TAG(name)=Property tag name" \
-                         "NEW_TYPE_TAG(name)=Type tag name" \
-                         HAVE_VALGRIND:=1
-
 INPUT                 += @srcdir@/mainpage.txt \
                          @srcdir@/modules.txt \
                          @top_srcdir@/dumux \