Method removeRole

flow/Trace.cpp:546–558

	}

	void removeRole(std::string const& role) {
		MutexHolder holder(mutex);

		RoleInfo& r = mutateRoleInfo();

		auto itr = r.roles.find(role);
		ASSERT(itr != r.roles.end() || (g_network->isSimulated() && g_network->getLocalAddress() == NetworkAddress()));

		if (itr != r.roles.end() && --(*itr).second == 0) {
			r.roles.erase(itr);
			r.refreshRolesString();
		}
	}

	void setLogGroup(const std::string& logGroup) {
		MutexHolder holder(mutex);