For now, disable the code which duplicated EQ settings. This code
currently always duplicates settings if something was touched, as the
comparison with index 0 (flat profile) will very likey fail.

This needs more improvements beyond the current code, before we can
activate auto-saving of EQ changes, mainly:
- Figure out a way how to deal with (likely unchangable) default profiles
- Correctly mark own created profiles
- Correctly save own created profiles once overall preset is changed, but
  not override standard profiles
- Save own EQ profiles at exit automatically if desired.
- If above problems are solved, AND the user selected a default EQ profile
  and changed it inbetween, the commented code can be reconsidered.

This commit basically changes behaviour back to vlc 2.2.x, where a new
EQ Profile needs to be explicitly saved if desired (using the dropdown
menu).

refs #19260

(cherry picked from commit d0fe23e61ac1f6a7ecf2886e396fc1dcf1408a9d)
Signed-off-by: David Fuhrmann <dfuhrmann@videolan.org>