Revert "アクティビティを宣言"

This reverts commit 6d71322982.

feature/library/src/main/AndroidManifest.xml

@@ -1,9 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
 
-   <application>
-    <activity
-        android:name=".LibraryTopFragment"
-        android:exported="false" />
-</application>
 </manifest>