Linux got no SwiftUI just yet

... makes no sense to try to build there.

Author: helje5

.github/workflows/swift.yml

@@ -7,24 +7,6 @@ on:
     - cron: "15 8 * * 1"
 
 jobs:
-  linux:
-    runs-on: ubuntu-latest
-    strategy:
-      fail-fast: false
-      matrix:
-        image:
-          - swift:5.3.2-xenial
-          - swift:5.3.2-bionic
-    container: ${{ matrix.image }}
-    steps:
-      - name: Checkout Repository
-        uses: actions/checkout@v2
-      - name: Build Swift Debug Package
-        run: swift build -c debug
-      - name: Build Swift Release Package
-        run: swift build -c release
-      - name: Run Tests
-        run: swift test
   nextstep:
     runs-on: macos-latest
     steps:
@@ -38,5 +20,3 @@ jobs:
         run: swift build -c debug
       - name: Build Swift Release Package
         run: swift build -c release
-      - name: Run Tests
-        run: swift test