dbmi.h: remove unused OK ERROR

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@55392 15284696-431f-4ddb-bdfa-cd5b030d7da7

include/dbmi.h

@@ -15,10 +15,6 @@
 #include <stdio.h>
 #include <grass/gis.h>
 
-/* exit codes */
-#define OK 0
-#define ERROR 1
-
 #define DB_VERSION "0"
 
 #define DB_DEFAULT_DRIVER "sqlite"