It might be a bit more complicated than just deleting the disc tags.
If you have album tracks which were numbered, say, 1-14 for the first disc and 1-12 for the second disc,
then they will be 'merged' when you delete the disc number. Eg. they'll be listed like 01, 01, 02, 02, 03, 03, etc.
Even if you kept the disc tags, but just changed the column display from 'disc-track#' to 'track#', I think the same problem would occur.
If you don't use the disc tag to separate double discs, then there are two methods I know of to stop that 'merging' happening:
1)
Edit the title of the album so both discs have different names.
Eg. 'Electric Ladyland (disc1)' and 'Electric Ladyland (disc2)'
2)
Renumber the tracks so that you have a continuous numbering across both discs.