Android: Clean up ProGuard

Source/Android/app/proguard-rules.pro

@@ -2,46 +2,6 @@
 # than the space savings obfuscation could give us
 -dontobfuscate
 
-#
-# Kotlin Serialization
-#
-
-# Keep `Companion` object fields of serializable classes.
-# This avoids serializer lookup through `getDeclaredClasses` as done for named companion objects.
--if @kotlinx.serialization.Serializable class **
--keepclassmembers class <1> {
-    static <1>$Companion Companion;
-}
-
-# Keep `serializer()` on companion objects (both default and named) of serializable classes.
--if @kotlinx.serialization.Serializable class ** {
-    static **$* *;
-}
--keepclassmembers class <2>$<3> {
-    kotlinx.serialization.KSerializer serializer(...);
-}
-
-# Keep `INSTANCE.serializer()` of serializable objects.
--if @kotlinx.serialization.Serializable class ** {
-    public static ** INSTANCE;
-}
--keepclassmembers class <1> {
-    public static <1> INSTANCE;
-    kotlinx.serialization.KSerializer serializer(...);
-}
-
-# @Serializable and @Polymorphic are used at runtime for polymorphic serialization.
--keepattributes RuntimeVisibleAnnotations,AnnotationDefault
-
-# Don't print notes about potential mistakes or omissions in the configuration for kotlinx-serialization classes
-# See also https://github.com/Kotlin/kotlinx.serialization/issues/1900
--dontnote kotlinx.serialization.**
-
-# Serialization core uses `java.lang.ClassValue` for caching inside these specified classes.
-# If there is no `java.lang.ClassValue` (for example, in Android), then R8/ProGuard will print a warning.
-# However, since in this case they will not be used, we can disable these warnings
--dontwarn kotlinx.serialization.internal.ClassValueReferences
-
 # Required for R8 full mode
 -dontwarn org.bouncycastle.jsse.BCSSLParameters
 -dontwarn org.bouncycastle.jsse.BCSSLSocket