Remove GSON proguard rules

app/proguard-rules.pro

@@ -107,33 +107,6 @@
 # === Okio: https://github.com/square/okio/tree/9b8545e7fa267c9d89753283990f24a35cd69cd6#proguard
 -dontwarn okio.**
 
-# === GSON: https://raw.githubusercontent.com/google/gson/master/examples/android-proguard-example/proguard.cfg
-# 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.google.gson.examples.android.model.** { <fields>; }
-
-# Prevent proguard from stripping interface information from TypeAdapterFactory, TypeAdapter,
-# 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>;
-}
-
 # == Nucleus
 -keepclassmembers class * extends nucleus.presenter.Presenter {
     <init>();