Remove OSInAppMessage iOS

* Remove OSInAppMessage
* Remove InAppMessage lifecycle handler params methods

Author: tanaynigam

ios/Classes/OneSignalPlugin.m

@@ -55,13 +55,6 @@ it will add the observers (ie. subscription)
 
 @property (strong, nonatomic) NSMutableDictionary* notificationCompletionCache;
 @property (strong, nonatomic) NSMutableDictionary* receivedNotificationCache;
-
-@property (atomic) BOOL hasSetOnWillDisplayInAppMessageHandler;
-@property (atomic) BOOL hasSetOnDidDisplayInAppMessageHandler;
-@property (atomic) BOOL hasSetOnWillDismissInAppMessageHandler;
-@property (atomic) BOOL hasSetOnDidDismissInAppMessageHandler;
-
-@property (strong, nonatomic) OSInAppMessage *inAppMessage;
 @end
 
 @implementation OneSignalPlugin
@@ -76,10 +69,6 @@ + (instancetype)sharedInstance {
         sharedInstance.notificationCompletionCache = [NSMutableDictionary new];;
         sharedInstance.hasSetInAppMessageClickedHandler = false;
         sharedInstance.hasSetNotificationWillShowInForegroundHandler = false;
-        sharedInstance.hasSetOnWillDisplayInAppMessageHandler = false;
-        sharedInstance.hasSetOnDidDisplayInAppMessageHandler = false;
-        sharedInstance.hasSetOnWillDismissInAppMessageHandler = false;
-        sharedInstance.hasSetOnDidDismissInAppMessageHandler = false;
     });
     return sharedInstance;
 }
@@ -162,14 +151,6 @@ - (void)handleMethodCall:(FlutterMethodCall*)call result:(FlutterResult)result {
         [self initNotificationWillShowInForegroundHandlerParams];
     else if ([@"OneSignal#completeNotification" isEqualToString:call.method])
         [self completeNotification:call withResult:result];
-    else if ([@"OneSignal#onWillDisplayInAppMessageHandlerParams" isEqualToString:call.method])
-        [self onWillDisplayInAppMessageHandlerParams];
-    else if ([@"OneSignal#onDidDisplayInAppMessageHandlerParams" isEqualToString:call.method])
-        [self onDidDisplayInAppMessageHandlerParams];
-    else if ([@"OneSignal#onWillDismissInAppMessageHandlerParams" isEqualToString:call.method])
-        [self onWillDismissInAppMessageHandlerParams];
-    else if ([@"OneSignal#onDidDismissInAppMessageHandlerParams" isEqualToString:call.method])
-        [self onDidDismissInAppMessageHandlerParams];
     else
         result(FlutterMethodNotImplemented);
 }
@@ -178,11 +159,11 @@ - (void)setAppId:(FlutterMethodCall *)call withResult:(FlutterResult)result {
      [OneSignal setInAppMessageClickHandler:^(OSInAppMessageAction *action) {
          [self handleInAppMessageClicked:action];
      }];
-
-    [OneSignal setInAppMessageLifecycleHandler:self];
 
     [OneSignal setAppId:call.arguments[@"appId"]];
 
+    [OneSignal setInAppMessageLifecycleHandler: self];
+
     // If the user has required privacy consent, the SDK will not
     // add these observers. So we should delay adding the observers
     // until consent has been provided.
@@ -419,43 +400,6 @@ - (void)handleInAppMessageClicked:(OSInAppMessageAction *)action {
     [self.channel invokeMethod:@"OneSignal#handleClickedInAppMessage" arguments:action.toJson];
 }
 
-#pragma mark In App Message lifecycle Handler
-- (void)onWillDisplayInAppMessageHandlerParams {
-    self.hasSetOnWillDisplayInAppMessageHandler = YES;
-
-    if (self.inAppMessage) {
-        [self onWillDisplayInAppMessage:self.inAppMessage];
-        self.inAppMessage = nil;
-    }
-}
-
-- (void)onDidDisplayInAppMessageHandlerParams {
-    self.hasSetOnDidDisplayInAppMessageHandler = YES;
-
-    if (self.inAppMessage) {
-        [self onDidDisplayInAppMessage:self.inAppMessage];
-        self.inAppMessage = nil;
-    }
-}
-
-- (void)onWillDismissInAppMessageHandlerParams {
-    self.hasSetOnWillDismissInAppMessageHandler = YES;
-
-    if (self.inAppMessage) {
-        [self onWillDismissInAppMessage:self.inAppMessage];
-        self.inAppMessage = nil;
-    }
-}
-
-- (void)onDidDismissInAppMessageHandlerParams {
-    self.hasSetOnDidDismissInAppMessageHandler = YES;
-
-    if (self.inAppMessage) {
-        [self onDidDismissInAppMessage:self.inAppMessage];
-        self.inAppMessage = nil;
-    }
-}
-
 #pragma mark OSInAppMessageLifeCycleHandler
 - (void)onWillDisplayInAppMessage:(OSInAppMessage *) result {
     [self.channel invokeMethod:@"OneSignal#onWillDisplayInAppMessage" arguments:result.toJson];