Android Studio build.gradle 警告消息[重复]

在我成功更新到 Android Studio 3.1 Canary 9 后，我收到警告消息：

Warning:Configuration 'compile' is obsolete and has been replaced with 'implementation'.
It will be removed at the end of 2018

我知道这个警告至少目前不会在我的项目中造成任何问题。但我想把它完全删除，这样以后就不会出现任何问题了。但在查看我的 build.gradle 文件后，我根本找不到任何调用此警告的代码行。

这是我的 build.gradle 文件

apply plugin: 'com.android.application'

android {
    compileSdkVersion 27
    defaultConfig {
        applicationId "app.project.virtualdiary"
        minSdkVersion 21
        targetSdkVersion 27
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
}

dependencies {
    implementation 'com.google.firebase:firebase-auth:11.8.0'
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:27.0.2'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.1'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
    implementation 'com.android.support:support-v4:27.0.2'
    implementation 'com.android.support:support-vector-drawable:27.0.2'
}


apply plugin: 'com.google.gms.google-services'

问题在于apply plugin: 'com.google.gms.google-services'

Google 服务插件正在代表您添加依赖项。希望他们将来能解决这个问题。