fix: cleanup unused actions (#873)

Signed-off-by: hackercat <me@hackerc.at>

.github/actions/composite/action.yml

@@ -1,22 +0,0 @@
-name: 'Test Composite Action'
-description: 'Test Composite Action'
-inputs:
-  input:
-    description: 'String to echo'
-    required: true
-    default: 'Hello World'
-outputs:
-  output:
-    description: 'Output string'
-    value: ${{ steps.set-output.outputs.string }}
-runs:
-  using: 'composite'
-  steps:
-    - run: echo Hello ${{ inputs.input }}.
-      shell: bash
-    - id: set-output
-      run: echo "::set-output name=string::output string"
-      shell: bash
-    - run: |
-        ${{ github.action_path }}/script.sh
-      shell: bash

.github/actions/composite/script.sh

@@ -1 +0,0 @@
-echo "Output from script"