.gitignore: remove idea, nose and qmake translation patterns
I do not use "idea" and do not know what it is.
We no longer use nose and our translations are .po files these days,
not theh Qt-specific .qm translation files.
The vim .swp patterns probably aren't needed, but vim is the only
editor that gets special treatment so we'll keep it.
I personally have my nvim setup to write swap files into a central
directory under ~/.cache/nvim/swap, so this setting isn't something I
use personally, but it doesn't hurt the occasional vim user.
Related-to: #553
Signed-off-by: David Aguilar <davvid@gmail.com>