Delete codespell presubmit.

This has caused repeated issues due to the fact that it checks the entire repo.  Most recently, it decided to complain about a typo in a file that hasn't been touched in 5 years.

PiperOrigin-RevId: 540356791

.github/workflows/codespell.yml

@@ -1,27 +0,0 @@
-# GitHub Action to automate the identification of common misspellings in text files.
-# https://github.com/codespell-project/actions-codespell
-# https://github.com/codespell-project/codespell
-name: codespell
-on:
-  push:
-    branches:
-      - main
-      - '[0-9]+.x'
-  pull_request:
-    branches:
-      - main
-      - '[0-9]+.x'
-
-permissions:
-  contents: read  #  to fetch code (actions/checkout)
-jobs:
-  codespell:
-    name: Check for spelling errors
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3.3.0
-      - uses: codespell-project/actions-codespell@22ff5a2e4b591290baf82d47c9feadac31c65441 # v1.0
-        with:
-          check_filenames: true
-          skip: ./.git,./third_party,./conformance/third_party,*.snk,*.pb,*.pb.cc,*.pb.h,*.pb.cs,*-upb.h,*-upb.c,./src/google/protobuf/testdata,./objectivec/Tests,./python/compatibility_tests/v2.5.0/tests/google/protobuf/internal,./.github/workflows/codespell.yml
-          ignore_words_list: "alow,alse,atleast,ba,chec,cleare,copyable,couldn,cloneable,crate,dedup,dur,errorprone,falsy,files',fo,fundementals,generaters,hel,importd,inherting,inout,leapyear,nd,nin,ois,ons,parseable,process',ro,te,testof,ue,unparseable,wasn,wee,gae,keyserver,objext,od,optin,streem,sur,falsy,cleary"