Use empty requirements_diff for schedule and workflow_dispatch (#50450)

.github/workflows/wheels.yml

@@ -3,11 +3,6 @@ name: Build wheels
 # yamllint disable-line rule:truthy
 on:
   workflow_dispatch:
-    inputs:
-      ignore_diff:
-        description: "Ignore checking requirements_diff.txt"
-        default: "false"
-        required: true
   schedule:
     - cron: "0 4 * * *"
   push:
@@ -34,12 +29,10 @@ jobs:
 
       - name: Create requirements_diff file
         run: |
-          curl -s -o requirements_diff.txt https://raw.githubusercontent.com/home-assistant/core/dev/requirements.txt
-
-          if [[ ${{ github.event_name }} == "workflow_dispatch" ]]; then
-            if [[ ${{ github.event.inputs.ignore_diff }} == "true" ]]; then
-              echo "" > requirements_diff.txt
-            fi
+          if [[ ${{ github.event_name }} ~= (schedule|workflow_dispatch) ]]; then
+            touch requirements_diff.txt
+          else
+            curl -s -o requirements_diff.txt https://raw.githubusercontent.com/home-assistant/core/master/requirements.txt
           fi
 
       - name: Write env-file