v.transform: fix headers (libtrans.h has been replaced by transform.h)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@49230 15284696-431f-4ddb-bdfa-cd5b030d7da7

vector/v.transform/trans.h

@@ -84,4 +84,4 @@ struct command_flags
     int usage;
 };
 
-#include <grass/libtrans.h>
+#include <grass/transform.h>

vector/v.transform/trans_digit.c

@@ -1,5 +1,4 @@
 #include <math.h>
-#include <grass/libtrans.h>
 #include <grass/vector.h>
 #include <grass/gis.h>
 #include <grass/dbmi.h>