Adjustments to return to a single requirements.txt

.github/workflows/nightly.yml

@@ -27,7 +27,7 @@ jobs:
         run: |
           python -m pip install -U pip
           pip install -U pyinstaller pywin32
-          pip install -U -r requirements-windows.txt
+          pip install -U -r requirements.txt
       - name: Build Video2X CLI
         run: |
           pyinstaller --noconfirm --log-level=WARN `