Remove classy-prelude patch

This has been fixed in https://github.com/snoyberg/mono-traversable/pull/205
and released as classy-prelude-1.5.0.1

patches/classy-prelude-1.5.0.patch

-diff --git a/src/ClassyPrelude.hs b/src/ClassyPrelude.hs
-index 3373e08..f683f4c 100644
---- a/src/ClassyPrelude.hs
-+++ b/src/ClassyPrelude.hs
-@@ -190,7 +190,10 @@ import Data.Time
-     , toGregorian
-     , fromGregorian
-     , formatTime
-+#if MIN_VERSION_time(1,10,0)
-+#else
-     , parseTime
-+#endif
-     , parseTimeM
-     , getCurrentTime
-     , defaultTimeLocale