Clean up extraneous files

build.sbt

@@ -30,8 +30,6 @@ resolvers += Resolver.jcenterRepo
 
 useSupportVectors
 
-googleServicesSettings
-
 libraryDependencies ++= Seq(
   "com.android.support" % "design" % "24.2.1",
   "com.android.support" % "gridlayout-v7" % "24.2.1",
@@ -55,7 +53,6 @@ proguardVersion in Android := "5.3"
 proguardCache in Android := Seq()
 
 proguardOptions in Android ++= Seq(
-  "-keepattributes Signature",
   "-keep class com.github.shadowsocks.System { *; }",
   "-dontwarn com.google.android.gms.internal.**",
   "-dontwarn com.j256.ormlite.**",

google-services.json

@@ -1,42 +0,0 @@
-{
-  "project_info": {
-    "project_number": "261400168171",
-    "firebase_url": "https://admob-app-id-3330146721.firebaseio.com",
-    "project_id": "admob-app-id-3330146721",
-    "storage_bucket": "admob-app-id-3330146721.appspot.com"
-  },
-  "client": [
-    {
-      "client_info": {
-        "mobilesdk_app_id": "1:261400168171:android:dbdd6331c434162f",
-        "android_client_info": {
-          "package_name": "com.github.shadowsocks"
-        }
-      },
-      "oauth_client": [
-        {
-          "client_id": "261400168171-g7aelv5bu012ojr7dod7lq09c9anjimh.apps.googleusercontent.com",
-          "client_type": 3
-        }
-      ],
-      "api_key": [
-        {
-          "current_key": "AIzaSyCee3fAad7nb3YsxeUO9mqqHFfAvsSCbVs"
-        }
-      ],
-      "services": {
-        "analytics_service": {
-          "status": 1
-        },
-        "appinvite_service": {
-          "status": 1,
-          "other_platform_oauth_client": []
-        },
-        "ads_service": {
-          "status": 2
-        }
-      }
-    }
-  ],
-  "configuration_version": "1"
-}

project/plugins.sbt

@@ -1,7 +1,5 @@
 addSbtPlugin("org.scala-android" % "sbt-android" % "1.6.18")
 
-addSbtPlugin("org.scala-android" % "sbt-android-gms" % "0.2")
-
 addSbtPlugin("com.timushev.sbt" % "sbt-updates" % "0.1.10")
 
 addSbtPlugin("net.virtual-void" % "sbt-dependency-graph" % "0.8.2")