Removed old arch-build GitHub Action

.github/workflows/arch-build.yml

@@ -1,35 +0,0 @@
-# This is a basic workflow to help you get started with Actions
-
-name: Check build for Arch.
-
-# Controls when the workflow will run
-on:
-  # Triggers the workflow on push or pull request events but only for the main branch
-  push:
-    branches: [ main ]
-  pull_request:
-    branches: [ main ]
-
-  # Allows you to run this workflow manually from the Actions tab
-  workflow_dispatch:
-
-jobs:
-  arch-build:
-    container: archlinux:latest
-    runs-on: ubuntu-latest
-    env:
-      PACKAGES: meson gtk3 gobject-introspection vala json-glib libhandy gtk-layer-shell scdoc libpulse libgee
-    steps:
-      - name: Install packages
-        run: |
-          pacman-key --init
-          pacman -Sy --noconfirm $PACKAGES
-
-      - name: Check out sources
-        uses: actions/checkout@v3
-
-      - name: Meson configure
-        run: meson build
-
-      - name: Build
-        run: ninja -C build