[serokell#206] Remove listToMaybe (serokell#258)

Problem: we export `listToMaybe` from `Data.Maybe`. It makes no sense
because we have `safeHead` in `Universum.Container` which does the same thing.

Solution: remove `listToMaybe` from export list.

Author: DK318

CHANGES.md

@@ -4,6 +4,11 @@ Unreleased
 * [#176](https://github.com/serokell/universum/issues/176):
   Deprecate `note`.
 
+* [#206](https://github.com/serokell/universum/issues/206):
+  Remove `listToMaybe`.
+  _Migration guide:_ use `safeHead` directly with functions from
+  `Universum.Container` instead.
+
 1.7.3
 =====
 

src/Universum/Monad/Reexport.hs

@@ -57,7 +57,7 @@ import Control.Monad.Trans.Identity (IdentityT (runIdentityT))
 import Control.Monad.Trans.Maybe (MaybeT (..), exceptToMaybeT, maybeToExceptT)
 
 -- Maybe
-import Data.Maybe (Maybe (..), catMaybes, fromMaybe, isJust, isNothing, listToMaybe, mapMaybe,
+import Data.Maybe (Maybe (..), catMaybes, fromMaybe, isJust, isNothing, mapMaybe,
                    maybe, maybeToList)
 
 -- Either