rollback PIBinaryLog optimization due to last PIDeque fix

libs/main/io_devices/pibinarylog.cpp

@@ -655,9 +655,7 @@ bool PIBinaryLog::createIndex() {
 	llong cp = file.pos();
 	file.seekToBegin();
 	index.clear();
-	index = PIVector<BinLogIndex>();
 	index_pos.clear();
-	index_pos = PIMap<llong, int>();
 	parseLog(&file, &binfo, &index);
 	file.seek(cp);
 	is_indexed = !index.isEmpty();