Berthold Stoeger 00abc04913 cleanup: use getDiveSelection() to loop over selected dives
getDiveSelection() returns a vector of the selected dives.
Use that instead of looping over the dive table and checking
manually.

This removes a few lines of code.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
2020-10-03 10:01:13 -07:00
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