Respond to CR.

// FREEBIE

src/Util/OWSError.h

@@ -19,7 +19,6 @@ typedef NS_ENUM(NSInteger, OWSErrorCode) {
     OWSErrorCodeFailedToEncryptMessage = 110,
     OWSErrorCodeSignalServiceFailure = 1001,
     OWSErrorCodeSignalServiceRateLimited = 1010,
-    OWSErrorCodeWebRTCMissingDataChannel = 1011,
     OWSErrorCodeUserError = 2001,
 };
 
@@ -28,6 +27,5 @@ extern NSError *OWSErrorMakeUnableToProcessServerResponseError();
 extern NSError *OWSErrorMakeFailedToSendOutgoingMessageError();
 extern NSError *OWSErrorMakeNoSuchSignalRecipientError();
 extern NSError *OWSErrorMakeAssertionError();
-extern NSError *OWSErrorMakeWebRTCMissingDataChannelError();
 
 NS_ASSUME_NONNULL_END

src/Util/OWSError.m

@@ -40,10 +40,4 @@ NSError *OWSErrorMakeAssertionError()
                                        NSLocalizedString(@"ERROR_DESCRIPTION_UNKNOWN_ERROR", @"Worst case generic error message"));
 }
 
-NSError *OWSErrorMakeWebRTCMissingDataChannelError()
-{
-    return OWSErrorWithCodeDescription(OWSErrorCodeWebRTCMissingDataChannel,
-                                       NSLocalizedString(@"ERROR_DESCRIPTION_WEBRTC_MISSING_DATA_CHANNEL", @"Missing data channel while trying to sending message"));
-}
-
 NS_ASSUME_NONNULL_END