dts: xtensa: intel: Remove ALH nodes from ACE 3.0 PTL DTS

Remove the Audio Link Hub (ALH) nodes from the ACE 3.0 PTL DTS file.

This patch cleans up the Device Tree Source (DTS) for the ACE 3.0 PTL
platform by removing the definitions of the ALH DAI nodes. The ALH
interface is not utilized in the ACE 3.0 PTL architecture, making these
nodes redundant.

The following changes are made:
- Deleted the 'alh0' and 'alh1' nodes, which were previously defined
  with FIXME comments indicating a problematic modeling of individual
  ALH channels/instances using node labels.

This cleanup helps to prevent confusion and potential errors in device
configuration by ensuring that the DTS reflects the actual hardware
capabilities of the ACE 3.0 PTL platform.

Signed-off-by: Tomasz Leman <tomasz.m.leman@intel.com>