remove unneeded suppressions (Azure#20661)

Author: annelo-msft

sdk/containerregistry/Azure.Containers.ContainerRegistry/src/GlobalSuppressions.cs

@@ -9,9 +9,3 @@
 using System.Diagnostics.CodeAnalysis;
 
 [assembly: SuppressMessage("Usage", "AZC0001:Use one of the following pre-approved namespace groups (https://azure.github.io/azure-sdk/registered_namespaces.html): Azure.AI, Azure.Analytics, Azure.Communication, Azure.Data, Azure.DigitalTwins, Azure.Iot, Azure.Learn, Azure.Media, Azure.Management, Azure.Messaging, Azure.Search, Azure.Security, Azure.Storage, Azure.Template, Azure.Identity, Microsoft.Extensions.Azure", Justification = "<Pending>", Scope = "namespace", Target = "~N:Azure.Containers.ContainerRegistry")]
-[assembly: SuppressMessage("Usage", "AZC0012:Avoid single word type names", Justification = "<Pending>", Scope = "type", Target = "~T:Azure.Containers.ContainerRegistry.Repositories")]
-[assembly: SuppressMessage("Usage", "AZC0012:Avoid single word type names", Justification = "<Pending>", Scope = "type", Target = "~T:Azure.Containers.ContainerRegistry.Platform")]
-[assembly: SuppressMessage("Usage", "AZC0012:Avoid single word type names", Justification = "<Pending>", Scope = "type", Target = "~T:Azure.Containers.ContainerRegistry.Manifest")]
-[assembly: SuppressMessage("Usage", "AZC0012:Avoid single word type names", Justification = "<Pending>", Scope = "type", Target = "~T:Azure.Containers.ContainerRegistry.History")]
-[assembly: SuppressMessage("Usage", "AZC0012:Avoid single word type names", Justification = "<Pending>", Scope = "type", Target = "~T:Azure.Containers.ContainerRegistry.Descriptor")]
-[assembly: SuppressMessage("Usage", "AZC0012:Avoid single word type names", Justification = "<Pending>", Scope = "type", Target = "~T:Azure.Containers.ContainerRegistry.Annotations")]