Revert "Reland "Let InputFlinger create the server InputChannel""

Revert submission 12655292-hide-server-input-channel

Reason for revert: b/169173706
Reverted Changes:
Iefbfd9313:Reland "Let InputFlinger create the server InputCh...
I14837d545:Reland "Use new create/removeInputChannel()."

Change-Id: I7db057277df06fd865f5e9ffbdb88c940d0f9e8e
diff --git a/services/inputflinger/host/InputFlinger.h b/services/inputflinger/host/InputFlinger.h
index 47773d9..577309a 100644
--- a/services/inputflinger/host/InputFlinger.h
+++ b/services/inputflinger/host/InputFlinger.h
@@ -48,10 +48,8 @@
                                    const sp<ISetInputWindowsListener>&) {
         return binder::Status::ok();
     }
-    binder::Status createInputChannel(const std::string&, InputChannel*) {
-        return binder::Status::ok();
-    }
-    binder::Status removeInputChannel(const sp<IBinder>&) { return binder::Status::ok(); }
+    binder::Status registerInputChannel(const InputChannel&) { return binder::Status::ok(); }
+    binder::Status unregisterInputChannel(const sp<IBinder>&) { return binder::Status::ok(); }
     binder::Status setFocusedWindow(const FocusRequest&) { return binder::Status::ok(); }
 
 private: