remove publish script (#21064)

# Objective

- the publish script didn't actually work, it was just a vague
instruction on how to get something working
- it needed manual adaptation for each version to have the correct crate
order
- it was not fun to do

## Solution

- `cargo +nightly publish --workspace` now works, use that instead

tools/publish.sh

@@ -1,19 +0,0 @@
-if [ -n "$(git status --porcelain)" ]; then
-    echo "You have local changes!"
-    exit 1
-fi
-
-pushd crates
-
-for crate in `cargo package --workspace 2>&1 | grep Packaging | sed 's_.*crates/\(.*\))_\1_' | grep -v Packaging`
-do
-  echo "Publishing ${crate}"
-  pushd "$crate"
-  cargo publish
-  popd
-done
-
-popd
-
-echo "Publishing root crate"
-cargo publish