Fix build break.

SignalMetadataKit/src/SMKSecretSessionCipher.swift

@@ -12,7 +12,6 @@ public struct SecretSessionKnownSenderError: Error {
     public let senderDeviceId: UInt32
     public let cipherType: CiphertextMessage.MessageType
     public let groupId: Data?
-    public let unsealedContent: Data
     public let contentHint: UnidentifiedSenderMessageContent.ContentHint
     public let underlyingError: Error
 
@@ -21,7 +20,6 @@ public struct SecretSessionKnownSenderError: Error {
         self.senderDeviceId = messageContent.senderCertificate.sender.deviceId
         self.cipherType = messageContent.messageType
         self.groupId = messageContent.groupId.map { Data($0) }
-        self.unsealedContent = Data(messageContent.contents)
         self.contentHint = messageContent.contentHint
         self.underlyingError = underlyingError
     }

SignalMetadataKitTests/src/SMKSecretSessionCipherTest.swift

@@ -128,14 +128,6 @@ class SMKSecretSessionCipherTest: XCTestCase {
             XCTAssert(knownSenderError.underlyingError is SMKCertificateError )
             XCTAssertEqual(knownSenderError.contentHint, aliceContentHint)
             XCTAssertEqual(knownSenderError.groupId, aliceGroupId)
-            XCTAssertNoThrow(
-                try DecryptionErrorMessage(
-                    originalMessageBytes: knownSenderError.unsealedContent,
-                    type: knownSenderError.cipherType,
-                    timestamp: 31335,
-                    originalSenderDeviceId: knownSenderError.senderDeviceId
-                )
-            )
         } catch {
             XCTFail("Unexpected error: \(error)")
         }
@@ -203,14 +195,6 @@ class SMKSecretSessionCipherTest: XCTestCase {
             XCTAssert(knownSenderError.underlyingError is SMKCertificateError )
             XCTAssertEqual(knownSenderError.contentHint, aliceContentHint)
             XCTAssertEqual(knownSenderError.groupId, aliceGroupId)
-            XCTAssertNoThrow(
-                try DecryptionErrorMessage(
-                    originalMessageBytes: knownSenderError.unsealedContent,
-                    type: knownSenderError.cipherType,
-                    timestamp: 31338,
-                    originalSenderDeviceId: knownSenderError.senderDeviceId
-                )
-            )
         } catch {
             XCTFail("Unexpected error: \(error)")
         }
@@ -401,14 +385,6 @@ class SMKSecretSessionCipherTest: XCTestCase {
             XCTAssertEqual(knownSenderError.senderDeviceId, UInt32(aliceMockClient.deviceId))
             XCTAssertEqual(Data(knownSenderError.groupId!), "inyalowda".data(using: String.Encoding.utf8)!)
             XCTAssertEqual(knownSenderError.contentHint, .resendable)
-            XCTAssertNoThrow(
-                try DecryptionErrorMessage(
-                    originalMessageBytes: knownSenderError.unsealedContent,
-                    type: knownSenderError.cipherType,
-                    timestamp: 31335,
-                    originalSenderDeviceId: knownSenderError.senderDeviceId
-                )
-            )
 
             if case SignalError.invalidState(_) = knownSenderError.underlyingError {
                 // Expected