chore: Removal of az.codesigning package since its been renamed (Azure#27507)

Author: Jaxelr

documentation/azure-powershell-modules.md

@@ -38,7 +38,6 @@
 | Content Delivery Network       | `Az.Cdn`                        | [![Cdn]][CdnGallery]                                               | [Changelog][CdnChangeLog]                        |
 | Change Analysis                | `Az.ChangeAnalysis`             | [![ChangeAnalysis]][ChangeAnalysisGallery]                         | [Changelog][ChangeAnalysisChangeLog]             |
 | Cloud Service                  | `Az.CloudService`               | [![CloudService]][CloudServiceGallery]                             | [Changelog][CloudServiceChangeLog]               |
-| CodeSigning                    | `Az.CodeSigning`                | [![CodeSigning]][CodeSigningGallery]                               | [Changelog][CodeSigningChangeLog]                |
 | Cognitive Services             | `Az.CognitiveServices`          | [![CognitiveServices]][CognitiveServicesGallery]                   | [Changelog][CognitiveServicesChangeLog]          |
 | Communication                  | `Az.Communication`              | [![Communication]][CommunicationGallery]                           | [Changelog][CommunicationChangeLog]              |
 | Compute                        | `Az.Compute`                    | [![Compute]][ComputeGallery]                                       | [Changelog][ComputeChangeLog]                    |