Remove image push tests

Signed-off-by: Kathryn Baldauf <k_baldauf@apple.com>

Author: katiewasnothere

Tests/ContainerizationOCITests/RegistryClientTests.swift

@@ -166,7 +166,7 @@ struct OCIClientTests: ~Copyable {
         #expect(done)
     }
 
-    @Test(.enabled(if: hasRegistryCredentials))
+    @Test(.disabled("External users cannot push images, disable while we find a better solution"))
     func pushIndex() async throws {
         let client = RegistryClient(host: "ghcr.io", authentication: Self.authentication)
         let indexDescriptor = try await client.resolve(name: "apple/containerization/emptyimage", tag: "0.0.1")

Tests/ContainerizationTests/ImageTests/ImageStoreTests.swift

@@ -72,7 +72,10 @@ public class ImageStoreTests: ContainsAuth {
 
         let tempFile = self.dir.appending(path: "export.tar")
         try await self.store.save(references: [imageReference, expectedLoadedImage], out: tempFile)
+    }
 
+    @Test(.disabled("External users cannot push images, disable while we find a better solution"))
+    func testImageStorePush() async throws {
         let remoteImageName = "ghcr.io/apple/test-images/image-push"
         let epoch = Int(Date().timeIntervalSince1970.description)
         let tag = epoch != nil ? String(epoch!) : "latest"