[Fix] Remove email and remove sms

[shepherd-l]

Description

One Line Summary

Fixes removeEmail calls on Android and iOS and removeSms calls on iOS

Details

Motivation

Fixes errors when calling removeEmail on Android and iOS and removeSms on iOS

Scope

No changes to the public API as fixes apply to native calls to OneSignal Android and iOS SDKs

Call arguments for removeEmail and removeSms do not have defined keys in user.dart and calling with a key returns an error on iOS.
Fix could be done one of 2 ways:

1. Remove the key value in OSFlutterUser.m
   • What was done in this PR
2. Add the key value defined in OSFlutterUser.m (@"email", @"smsNumber") to user.dart
   • This also requires the key value to be added to Android in OneSignalUser.java

Testing

Manual testing

Tested removeEmail and removeSms on an user with emails and sms subscriptions and with none, app build of the OneSignal example app on on a emulated Pixel 4 with Android 12 and physical iPhone 12 with iOS 15.5.

Affected code checklist

• Notifications
  • Display
  • Open
  • Push Processing
  • Confirm Deliveries
• Outcomes
• Sessions
• In-App Messaging
• REST API requests
• Public API changes

Checklist

Overview

• I have filled out all REQUIRED sections above
• PR does one thing
  • If it is hard to explain how any codes changes are related to each other then it most likely needs to be more than one PR
• Any Public API changes are explained in the PR details and conform to existing APIs

Testing

• I have included test coverage for these changes, or explained why they are not needed
• All automated tests pass, or I explained why that is not possible
• I have personally tested this on my device, or explained why that is not possible

Final pass

• Code is as readable as possible.
  • Simplify with less code, followed by splitting up code into well named functions and variables, followed by adding comments to the code.
• I have reviewed this PR myself, ensuring it meets each checklist item
  • WIP (Work In Progress) is ok, but explain what is still in progress and what you would like feedback on. Start the PR title with "WIP" to indicate this.

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