deactivate non-implemented db.droptable in favour of working python db.droptable script

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@48063 15284696-431f-4ddb-bdfa-cd5b030d7da7

db/Makefile

@@ -10,7 +10,6 @@ SUBDIRS = \
 	db.describe \
 	db.drivers \
 	db.dropdb \
-	db.droptable \
 	db.execute \
 	db.login \
 	db.select \