sync-tflm: Remove automerging step from workflow
sync-tflm: Remove automerging step from workflow

This won't work with the autogenerated GitHub token we are going to use,
as it does not work with the required scope.

To have automerging we need to create a dedicated user with an
explicitly added Personal Access Token.

Signed-off-by: Piotr Zierhoffer <e1d19b12230bfc9d1ee7dc1e438ebc847bc06dad@antmicro.com>

google/CFU-Playground,google/CFU-Playground,google/CFU-Playground,google/CFU-Playground