Correct revision tracking code

ocdb.cpp

@@ -23,7 +23,6 @@ OCdb::OCdb(std::string db_file) {
 		!request("CREATE TABLE IF NOT EXISTS caches (code TEXT PRIMARY KEY, name TEXT, location TEXT, type TEXT, status TEXT, size TEXT, difficulty REAL, terrain REAL, country TEXT, region TEXT, owner TEXT);") || 
 		!request("CREATE TABLE IF NOT EXISTS logs (uuid TEXT PRIMARY KEY, cache_code TEXT, date TEXT, user TEXT, type TEXT);"))
 		throw 1;
-	request("UPDATE revision SET revision = 0;");
 	read_revision();
 }