Update v.db.addtable.html (#211)

Don't SEE ALSO itself.

scripts/v.db.addtable/v.db.addtable.html

@@ -48,7 +48,6 @@ v.info -c myroads layer=2
 <a href="db.connect.html">db.connect</a>,
 <a href="db.droptable.html">db.droptable</a>,
 <a href="db.execute.html">db.execute</a>,
-<a href="v.db.addtable.html">v.db.addtable</a>,
 <a href="v.db.connect.html">v.db.connect</a>,
 <a href="v.db.dropcolumn.html">v.db.dropcolumn</a>,
 <a href="v.db.droptable.html">v.db.droptable</a>,