removing lake-manifest should be superfluous

server/build.sh

@@ -10,17 +10,13 @@ cd $(dirname $0)
 # https://github.com/leanprover-community/mathlib4/wiki/Using-mathlib4-as-a-dependency#updating-mathlib4
 # Additionally, we had once problems with the `lake-manifest` when a new dependency got added
 # to `mathlib`, therefore we now delete it every time for good measure.
-(cd LeanProject &&
-  rm -f ./lake-manifest.json &&
+( cd LeanProject &&
   lake update -R &&
   lake build)
 
   # note: mathlib has now a post-update hook that modifies the `lean-toolchain`
   # and calls `lake exe cache get`. Therefore these two steps are currently superfluous.
 
-# Copy info about new versions to the client.
-# ./copy_versions.sh
-
 duration=$SECONDS
 echo "Finished in $(($duration / 60)):$(($duration % 60)) min."
 echo "Finished in $(($duration / 60)):$(($duration % 60)) min." | logger -t lean4web