fix: removed DeepLinkHandler for callback

BREAKING CHANGE: deep link data must be read from the Branch.initSession().then(data => {}) promise. See https://github.com/BranchMetrics/cordova-ionic-phonegap-branch-deep-linking#migrating-branch-cordova-sdk-from-v25-to-v30

README.md

@@ -1276,7 +1276,7 @@ _Questions? [Contact us](https://support.branch.io/support/tickets/new)_
 
 * #### Compiling: Errors
 
-  * ##### Migrating Branch Cordova SDK from v2.5+ to v2.7+
+  * ##### Migrating Branch Cordova SDK from v2.5+ to v3.0+
 
     ```diff
     // Branch initialization

src/android/io/branch/BranchSDK.java

@@ -830,22 +830,16 @@ public void onInitFinished(JSONObject referringParams, BranchError error) {
             String out;
 
             if (error == null && referringParams != null) {
-
-                out = String.format("DeepLinkHandler(%s)", referringParams.toString());
-                sendJavascript(out);
-
                 if (this._callbackContext != null) {
                     this._callbackContext.success(referringParams);
                 }
-
             } else {
                 JSONObject message = new JSONObject();
                 try {
                     message.put("error", error.getMessage());
                 } catch (JSONException e) {
                     e.printStackTrace();
                 }
-
                 if (this._callbackContext != null) {
                     this._callbackContext.error(message);
                 }

src/ios/BranchSDK.m

@@ -105,9 +105,6 @@ - (void)initSession:(CDVInvokedUrlCommand*)command
       pluginResult = [CDVPluginResult resultWithStatus:CDVCommandStatus_ERROR messageAsString:resultString];
     }
 
-    // assigns data to DeepLinkHandler within branch.js
-    [self.commandDelegate evalJs:[NSString stringWithFormat:@"DeepLinkHandler(%@)", resultString]];
-
     if (command != nil) {
       [self.commandDelegate sendPluginResult: pluginResult callbackId: command.callbackId];
     }