Remove last remaining derivations of Typeable

GHC 9.12 now warns about this:

    Deriving ‘Typeable’ has no effect: all types now auto-derive Typeable

and we specify -Werror so this is needed to fix CI builds with 9.12.

Related: f732082fdccb ("Remove all derivations of Typeable")

XMonad/Layout/CircleEx.hs

@@ -116,7 +116,7 @@ data CircleExMsg
   = Rotate !Double            -- ^ Rotate secondary windows by specific angle
   | IncStackRatio !Rational   -- ^ Increase (or decrease, with negative value) sizes of secondary windows
   | IncMultiplier !Rational   -- ^ Increase 'cMultiplier'.
-  deriving (Eq, Show, Typeable)
+  deriving (Eq, Show)
 
 instance Message CircleExMsg
 

XMonad/Layout/FixedAspectRatio.hs

@@ -158,6 +158,5 @@ data ManageAspectRatio =
     FixRatio Rational Window    -- ^ Set the aspect ratio for the window
   | ResetRatio Window           -- ^ Remove the aspect ratio for the window
   | ToggleRatio Rational Window -- ^ Toggle the reatio
-  deriving Typeable
 
 instance Message ManageAspectRatio