Messaging: Language cleanup

No unnecessary boxing, enhanced for loops, redundant checks and throws,
imports (removal, reordering), possible void returns

Change-Id: I7a8e1b2007e3b0906e01b41785c518d02c2f3fab

src/com/android/messaging/datamodel/NoConfirmationSmsSendService.java

@@ -1,5 +1,6 @@
 /*
  * Copyright (C) 2015 The Android Open Source Project
+ * Copyright (C) 2024 The LineageOS Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -18,7 +19,6 @@ package com.android.messaging.datamodel;
 
 import android.app.IntentService;
 import android.content.Intent;
-import android.net.Uri;
 import android.os.Bundle;
 import androidx.core.app.RemoteInput;
 import android.telephony.TelephonyManager;