rmi_splitter.py: fix remove_barcode_pos to rm barcode from qual_str

src/rmi_splitter/rmi_splitter.py

@@ -458,10 +458,12 @@ def remove_barcode_pos(reads, start, stop, header, verbose=False):
         if start == 0:
             reads.seq = reads.seq[stop:]
             reads.qual = reads.qual[stop:]
+            reads.qual_str = reads.qual_str[stop:]
         else:
             stop = stop - 1
             reads.seq = reads.seq[0:start] + reads.seq[stop:]
             reads.qual = reads.qual[0:start] + reads.qual[stop:]
+            reads.qual_str = reads.qual_str[0:start] + reads.qual_str[stop:]
     return reads