上限数にぶつかったので一つに統一

feature/wallet/src/main/res/navigation/feature_wallet_child_navigation.xml

@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<navigation xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:id="@+id/feature_wallet_child_navigation"
-    app:startDestination="@id/walletMainFragment">
-
-    <fragment
-        android:id="@+id/walletMainFragment"
-        android:name="one.nem.kidshift.wallet.WalletContentFragment"
-        android:label="fragment_wallet_main"
-        tools:layout="@layout/fragment_wallet_content" />
-</navigation>