Get rid of basic_debug last minute

This isn't a revert but rather just disables the codepaths. also see #12011

src/network/clientpackethandler.cpp

@@ -900,11 +900,6 @@ void Client::handleCommand_Privileges(NetworkPacket* pkt)
 		m_privileges.insert(priv);
 		infostream << priv << " ";
 	}
-
-	// Enable basic_debug on server versions before it was added
-	if (m_proto_ver < 40)
-		m_privileges.insert("basic_debug");
-
 	infostream << std::endl;
 }