Remove codespell again (#6028)

It was added in #3751 with the explicit reservation that we remove it
again when it turns out to be annoying. This is actually the case now; I
don't find catching spelling errors valuable enough to warrant the
nuisance of having to silence false positives. (And AI agents don't make
spelling mistakes anyway :-)

.codespellrc

@@ -1,7 +0,0 @@
-[codespell]
-# Ref: https://github.com/codespell-project/codespell#using-a-config-file
-skip = .git*,go.sum,*.lock,.codespellrc,vendor,translations,Keybindings_*.md,./pkg/gocui
-check-hidden = true
-# camel-cased
-ignore-regex = (\b[A-Za-z][a-z]*[A-Z]\S+\b|\.edn\b|\S+…|\\nd\b)
-ignore-words-list = fomrat,inbetween

.github/workflows/codespell.yml

@@ -1,25 +0,0 @@
-# Codespell configuration is within .codespellrc
----
-name: Codespell
-
-on:
-  push:
-    branches: [master]
-  pull_request:
-    branches: [master]
-
-permissions:
-  contents: read
-
-jobs:
-  codespell:
-    name: Check for spelling errors
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v7
-      - name: Annotate locations with typos
-        uses: codespell-project/codespell-problem-matcher@9ba2c57125d4908eade4308f32c4ff814c184633 # v1.2.0
-      - name: Codespell
-        uses: codespell-project/actions-codespell@8f01853be192eb0f849a5c7d721450e7a467c579 # v2.2