Remove the failing CI on the main branch (#805)

See
https://github.com/nushell/nu_scripts/pull/771#issuecomment-2020331739
and following

As we don't have a path forward to make sure all files are fixed and
will be maintained. (and the file detection itself is reliable)
Disable the `main` branch (and nightly run) for now.

This will keep the CI for PRs so at least added scripts pass the current
nu version

.github/workflows/daily.yml

@@ -1,31 +0,0 @@
-on:
-    push:
-        branches:
-            - main
-    schedule:
-        - cron: "30 0 * * *" # every day at 00:30 AM UTC
-
-env:
-    NUSHELL_CARGO_PROFILE: ci
-    NU_LOG_LEVEL: DEBUG
-
-jobs:
-    nu-check:
-        runs-on: ubuntu-latest
-
-        steps:
-            - uses: actions/checkout@v4
-            - name: "Fetch main branch"
-              run: |
-                  git fetch origin main --depth 1
-            - uses: hustcer/setup-nu@v3.9
-              with:
-                  version: "*"
-                  check-latest: true
-                  features: full # dataframe and extra included
-            - name: toolkit check pr --full
-              shell: nu {0}
-              # nix STUB_IDE_CHECK when nushell/nushell#12208 fixed
-              run: |
-                  use ${{ github.workspace }}/toolkit.nu *
-                  STUB_IDE_CHECK=true check pr --full --and-exit

README.md

@@ -1,8 +1,5 @@
 # Nushell Scripts
 
-![CI](https://github.com/nushell/nu_scripts/actions/workflows/daily.yml/badge.svg)
-
-
 This is a place to share Nushell scripts with each other. If you'd like to share your scripts, fork this repository, and [create a PR](https://github.com/nushell/nu_scripts/compare) that adds it to the repo.
 
 ## Sections