Remove support for legacy reports endpoint (#2319)

Author: mrwillis21

firebase-crashlytics/firebase-crashlytics.gradle

@@ -49,7 +49,6 @@ android {
 }
 
 thirdPartyLicenses {
-    add 'Protocol Buffers', "file://${projectDir}/third_party_licenses/protocol_buffers/LICENSE"
     add 'Tape', "file://${projectDir}/third_party_licenses/tape/LICENSE"
 }
 

firebase-crashlytics/src/androidTest/assets/empty_icon_settings.json

@@ -5,7 +5,7 @@
     "url": "http://localhost:3000/spi/v1/platform/android/apps",
     "reports_url": "http://localhost:3000/spi/v1/platform/android/apps/com.crashlytics.android/reports",
     "ndk_reports_url": "http://localhost:3000/spi/v1/platform/android/apps/com.crashlytics.android/minidumps",
-    "update_required": false
+    "update_required": false,
     "icon": {}
   },
   "settings": {