Merge pull request #1436 from nextcloud/cleanup-proguard-gson

cleanup proguard gson rules

News-Android-App/proguard-rules.pro

@@ -45,42 +45,6 @@
 # https://github.com/umano/AndroidSlidingUpPanel/issues/921
 -dontwarn com.sothree.slidinguppanel.SlidingUpPanelLayout
 
-# Gson
-# Following are rules from
-# https://github.com/google/gson/blob/37ed0fcbd7930df0aad9f5068c608e4465413877/examples/android-proguard-example/proguard.cfg
-# no rules are packaged into gson (as of 2.10.1)
-##---------------Begin: proguard configuration for Gson  ----------
-# Gson uses generic type information stored in a class file when working with fields. Proguard
-# removes such information by default, so configure it to keep all of it.
--keepattributes Signature
-
-# For using GSON @Expose annotation
--keepattributes *Annotation*
-
-# Gson specific classes
--dontwarn sun.misc.**
-#-keep class com.google.gson.stream.** { *; }
-
-# Application classes that will be serialized/deserialized over Gson
--keep class com.nextcloud.android.sso.model.** { <fields>; }
-
-# Prevent proguard from stripping interface information from TypeAdapter, TypeAdapterFactory,
-# JsonSerializer, JsonDeserializer instances (so they can be used in @JsonAdapter)
--keep class * extends com.google.gson.TypeAdapter
--keep class * implements com.google.gson.TypeAdapterFactory
--keep class * implements com.google.gson.JsonSerializer
--keep class * implements com.google.gson.JsonDeserializer
-
-# Prevent R8 from leaving Data object members always null
--keepclassmembers,allowobfuscation class * {
-  @com.google.gson.annotations.SerializedName <fields>;
-}
-
-# Retain generic signatures of TypeToken and its subclasses with R8 version 3.0 and higher.
--keep,allowobfuscation,allowshrinking class com.google.gson.reflect.TypeToken
--keep,allowobfuscation,allowshrinking class * extends com.google.gson.reflect.TypeToken
-
-##---------------End: proguard configuration for Gson  ----------
 
 # Other Libraries
 -dontwarn org.apache.velocity.**