simwe: remove redundant sites.h header

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@49212 15284696-431f-4ddb-bdfa-cd5b030d7da7

raster/simwe/r.sim.sediment/main.c

@@ -73,7 +73,6 @@
 #include <grass/vector.h>
 #include <grass/linkm.h>
 #include <grass/bitmap.h>
-/*#include <grass/site.h> */
 #include <grass/glocale.h>
 #include <grass/gmath.h>
 

raster/simwe/r.sim.water/main.c

@@ -80,7 +80,6 @@
 #include <grass/vector.h>
 #include <grass/linkm.h>
 #include <grass/bitmap.h>
-/* #include <grass/site.h> */
 #include <grass/glocale.h>
 #include <grass/gmath.h>
 

raster/simwe/simlib/hydro.c

@@ -19,7 +19,6 @@
 #include <stdlib.h>
 #include <math.h>
 #include <grass/gis.h>
-/* #include <grass/site.h> */
 #include <grass/bitmap.h>
 #include <grass/linkm.h>
 #include <grass/glocale.h>

raster/simwe/simlib/random.c

@@ -4,7 +4,6 @@
 #include <stdlib.h>
 #include <math.h>
 #include <grass/gis.h>
-#include <grass/site.h>
 #include <grass/bitmap.h>
 #include <grass/linkm.h>