revert https://trac.osgeo.org/grass/changeset/53072

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@53073 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/r.viewshed/main.cpp

@@ -44,7 +44,6 @@
 extern "C"
 {
 #include <grass/config.h>
-#include <grass/raster.h>
 #include <grass/gis.h>
 #include <grass/glocale.h>
 }