Kernel: Remove declarations for non-existent methods

Author: https://github.com/AtkinsSJ
Commit: 3cbc0fdbb0
Pull-request: https://github.com/SerenityOS/serenity/pull/17203
Reviewed-by: https://github.com/linusg ✅

Kernel/Bus/USB/USBEndpoint.h

@@ -53,7 +53,6 @@ public:
     u8 polling_interval() const { return m_descriptor.poll_interval_in_frames; }
 
 private:
-    USBEndpoint(/* TODO */);
     USBEndpointDescriptor m_descriptor;
 
     Pipe m_pipe;