unused imports

Author: glguy

solutions/src/2022/22_alt.hs

@@ -38,10 +38,8 @@ import Advent (stageTH, format, countBy)
 import Advent.Coord (Coord(..), coordLines, origin, above, below, left, right)
 import Advent.Permutation (Permutation, mkPermutation, invert)
 import Advent.Search (dfsOn)
-import Control.Monad (msum)
 import Data.Map (Map)
 import Data.Map qualified as Map
-import Data.Maybe (isJust)
 import Data.Set (Set)
 import Data.Set qualified as Set