Remove functions-related buildpacks (#1102)

* Remove functions-related buildpacks

The `heroku/nodejs-function-invoker`, `heroku/nodejs-npm`, and `heroku/nodejs-function` buildpacks have been split out to their own [maintenance branch](v3.6.3...sf-functions). The reason for this is so that Node.js Function CNBs can be isolated from future changes to the buildpacks on `main`.

Author: colincasey

.github/workflows/ci.yml

@@ -139,23 +139,3 @@ jobs:
         working-directory: ${{ matrix.dir }}
         run: cargo test --locked -- --ignored --test-threads 16
 
-  shpec:
-    runs-on: ubuntu-24.04
-    container:
-      image: heroku/heroku:${{ matrix.stack-version }}-build
-    strategy:
-      matrix:
-        stack-version:
-          - '22'
-        buildpack-dir:
-          - buildpacks/npm
-    defaults:
-      run:
-        shell: bash
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-      - name: Install shpec
-        run: sh -c "`curl -L https://raw.githubusercontent.com/rylnd/shpec/master/install.sh`"
-      - name: Shpec unit tests on heroku-${{ matrix.stack-version }}
-        run: shpec ${{ matrix.buildpack-dir }}/shpec/*_shpec.sh

Cargo.lock

@@ -3,7 +3,6 @@ resolver = "2"
 members = [
     "buildpacks/nodejs-engine",
     "buildpacks/nodejs-corepack",
-    "buildpacks/nodejs-function-invoker",
     "buildpacks/nodejs-npm-engine",
     "buildpacks/nodejs-npm-install",
     "buildpacks/nodejs-pnpm-engine",

Cargo.toml

@@ -69,7 +69,6 @@ This repository contains multiple buildpacks:
 | `heroku/nodejs`              | Node.js Composite Buildpack | [Readme](meta-buildpacks/nodejs/README.md)         |
 | `heroku/nodejs-engine`       | Node.js Engine Buildpack    | [Readme](buildpacks/nodejs-engine/README.md)       |
 | `heroku/nodejs-corepack`     | Corepack Buildpack          | [Readme](buildpacks/nodejs-corepack/README.md)     |
-| `heroku/nodejs-npm`          | npm Buildpack               | [Readme](buildpacks/npm/README.md)                 |
 | `heroku/nodejs-npm-engine`   | npm Engine Buildpack        | [Readme](buildpacks/nodejs-npm-engine/README.md)   |
 | `heroku/nodejs-npm-install`  | npm Install Buildpack       | [Readme](buildpacks/nodejs-npm-install/README.md)  |
 | `heroku/nodejs-pnpm-install` | pnpm install Buildpack      | [Readme](buildpacks/nodejs-pnpm-install/README.md) |