Revert no_sleep.pp VIDEOIDLE registry key and associated tests

The existing powercfg -x -monitor-timeout-ac 0 already sets VIDEOIDLE
to 0 for the active power scheme. The registry addition wrote to the
global PowerSettings path which is not the authoritative location.
The PowerMonitorOff theory was also not confirmed as the root cause.

Author: jwmossmoz

modules/win_os_settings/manifests/no_sleep.pp

@@ -17,20 +17,4 @@
         command  => 'powercfg.exe -x -monitor-timeout-ac 0',
         provider => powershell,
     }
-
-    # Bug 2026458: Prevent GUID_SESSION_DISPLAY_STATUS from sending
-    # PowerMonitorOff on headless Azure GPU VMs (25H2 A10-8Q vGPU).
-    # The VIDEOIDLE subgroup controls display idle timeout behavior.
-    $power_settings_key = "${power_key}\\PowerSettings"
-    $display_subgroup    = '7516b95f-f776-4464-8c53-06167f40cc99'
-    $video_idle_setting  = '3c0bc021-c8a8-4e07-a973-6b14cbcb2b7e'
-    $video_idle_key      = "${power_settings_key}\\${display_subgroup}\\${video_idle_setting}"
-
-    # ACSettingIndex = 0 means "never turn off display" for the active
-    # power scheme, applied via registry to persist across reboots.
-    registry_value { "${video_idle_key}\\ACSettingIndex":
-        ensure => present,
-        type   => 'dword',
-        data   => 0,
-    }
 }

test/integration/win116424h2azure/serverspec/system_profiles_spec.rb

@@ -155,10 +155,4 @@
     end
   end
 
-  # Bug 2026458: VIDEOIDLE ACSettingIndex prevents GUID_SESSION_DISPLAY_STATUS PowerMonitorOff
-  video_idle_key = 'HKLM:\\SYSTEM\\CurrentControlSet\\Control\\Power\\PowerSettings\\7516b95f-f776-4464-8c53-06167f40cc99\\3c0bc021-c8a8-4e07-a973-6b14cbcb2b7e'
-  describe registry_value_command(video_idle_key, 'ACSettingIndex') do
-    its(:exit_status) { should eq 0 }
-    its(:stdout) { should match(/^0\s*$/) }
-  end
 end

test/integration/win116425h2azure/serverspec/system_profiles_spec.rb

@@ -155,10 +155,4 @@
     end
   end
 
-  # Bug 2026458: VIDEOIDLE ACSettingIndex prevents GUID_SESSION_DISPLAY_STATUS PowerMonitorOff
-  video_idle_key = 'HKLM:\\SYSTEM\\CurrentControlSet\\Control\\Power\\PowerSettings\\7516b95f-f776-4464-8c53-06167f40cc99\\3c0bc021-c8a8-4e07-a973-6b14cbcb2b7e'
-  describe registry_value_command(video_idle_key, 'ACSettingIndex') do
-    its(:exit_status) { should eq 0 }
-    its(:stdout) { should match(/^0\s*$/) }
-  end
 end