chore: revert kotlin fix

Author: loks0n

templates/kotlin/src/main/kotlin/io/appwrite/extensions/JsonExtensions.kt.twig

@@ -1,14 +1,9 @@
 package {{ sdk.namespace | caseDot }}.extensions
 
 import com.google.gson.Gson
-import com.google.gson.GsonBuilder
-import com.google.gson.reflect.TypeToken
-import {{ sdk.namespace | caseDot }}.json.PreciseNumberAdapter
-
-val gson = GsonBuilder().registerTypeAdapter(
-    object : TypeToken<Map<String, Any>>(){}.type,
-    PreciseNumberAdapter()
-).create()
+
+val gson = Gson()
+
 fun Any.toJson(): String =
     gson.toJson(this)