Remove unneeded JNI registrations.

base/android/library_loader/library_loader_hooks.cc

Index: base/android/library_loader/library_loader_hooks.cc
diff --git a/base/android/library_loader/library_loader_hooks.cc b/base/android/library_loader/library_loader_hooks.cc
index 0145eabe1e7ab69c6e5a4f127aa86f7b0922ffe5..3a3d9f731c9fbb19acfc91b4c7f0d4086abec76a 100644
--- a/base/android/library_loader/library_loader_hooks.cc
+++ b/base/android/library_loader/library_loader_hooks.cc
@@ -49,13 +49,6 @@ void LibraryLoaderExitHook() {
   }
 }
 
-bool RegisterLibraryLoaderEntryHook(JNIEnv* env) {
-  // We need the AtExitManager to be created at the very beginning.
-  g_at_exit_manager = new base::AtExitManager();
-
-  return RegisterNativesImpl(env);
-}
-
 void SetVersionNumber(const char* version_number) {
   g_library_version_number = strdup(version_number);
 }