Revert "Allow to provide the next release version when the release is triggered manually"

This reverts commit 7dd886d.

Author: jakzal

.github/workflows/release.yml

@@ -4,10 +4,6 @@ on:
     schedule:
         -   cron: '0 3 * * 1'
     workflow_dispatch:
-        inputs:
-            next_release:
-                type: string
-                description: The version to release
 
 jobs:
     release:
@@ -20,4 +16,3 @@ jobs:
             -   run: make auto-release
                 env:
                     GITHUB_TOKEN: ${{ secrets.ACCESS_TOKEN }}
-                    NEXT_RELEASE: ${{ github.event.inputs.next_release }}