Revert "Fix two whitespace violations (#1922)"

This reverts commit efc0230.

Author: jamesmckinna

CHANGELOG/v1.7.2.md

@@ -5,5 +5,5 @@ The library has been tested using Agda 2.6.3.
 
 * In accordance with changes to the flags in Agda 2.6.3, all modules that previously used
   the `--without-K` flag now use the `--cubical-compatible` flag instead.
-
+  
 * Updated the code using `primFloatToWord64` - the library API has remained unchanged.

src/Data/List/Membership/Setoid/Properties.agda

@@ -122,7 +122,7 @@ module _ (S : Setoid c ℓ) where
                     length (mapWith∈ xs f) ≡ length xs
   length-mapWith∈ []       = P.refl
   length-mapWith∈ (x ∷ xs) = P.cong suc (length-mapWith∈ xs)
-
+  
   mapWith∈-id : ∀ xs → mapWith∈ xs (λ {x} _ → x) ≡ xs
   mapWith∈-id []       = P.refl
   mapWith∈-id (x ∷ xs) = P.cong (x ∷_) (mapWith∈-id xs)