rm getParameterCount calls

This method isn't compatible with Android 7 and older devices and
causes a crash.
AGP 8 (Android Gradle Plugin) added compatibility for this, however
its not uncommon for app developers to still be on 7

Author: jkasten2

OneSignalSDK/onesignal/core/src/main/java/com/onesignal/common/modeling/Model.kt

@@ -98,7 +98,6 @@ open class Model(
                     val method =
                         this.javaClass.methods.firstOrNull {
                             it.returnType != Void::class.java &&
-                                it.parameterCount == 0 &&
                                 it.name.equals(
                                     "get$property",
                                     true,