Revert getComputerConnectionParameterList implementation

  Revert the implementation for now as it still not decided
  if we want this as part of the API or not.

Revert "Fix commit on getComputerConnectionParameterList"

This reverts commit 9d25d12bacf2fc1f4cfe2b81b84bc059baf3bb60.

Revert "Delete Computer_getConnectionParameterList from slapos_cloud"

This reverts commit 75c5217fd4328dd5d24ded20dc7965ce357ce4cf.

Revert "Add unit test for getComputerConnectionParameterList"

This reverts commit 4691a18b6dccf533316ec97272854bd0ba442b03.

Revert "Computer: Get connection parameters for aggregated hosting subscriptions"

This reverts commit 995bea7ac2d92a18a65a338a3ac924bdf4c46754.

Revert "Hosting Subscription: Add aggregate base category"

This reverts commit b3e8a8abc2f416090cb8982a7d66509e9e60101f.

Revert "Computer request software instance workflow"

This reverts commit 1350e5742923fb9dc8839e1d8d77fa1138a07c00.