ghc-latest.config: rere is up to date with GHC 9.10 now (#10202)

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

project-cabal/ghc-latest.config

@@ -6,10 +6,8 @@
 --   - cabal.validate.project (Cabal CI),
 -- Commented out below are the usual suspects. Feel free to add more.
 
--- NOTE: don't forget to update the compiler version in the conditionals
+-- NOTE: don't forget to update the compiler version in the conditional
 -- when upgrading to a newer GHC
-if impl(ghc >= 9.10.0)
-    allow-newer: rere:base
 if impl(ghc >= 9.12.0)
     allow-newer:
     --windns:*, rere:*, tree-diff:*, uuid-types:*, these:*, hashable:*, assoc:*, semialign:*, indexed-traversable-instances:*, indexed-traversable:*, OneTuple:*, scientific:*, time-compat:*, text-short:*, integer-conversion:*, generically:*, data-fix:*, binary:*