Merge ControlPlane into OneService to make variable access simpler.

service/OneService.hpp

@@ -131,11 +131,6 @@ public:
 	 */
 	virtual std::string portDeviceName(uint64_t nwid) const = 0;
 
-	/**
-	 * @return True if TCP fallback is currently active
-	 */
-	virtual bool tcpFallbackActive() const = 0;
-
 	/**
 	 * Terminate background service (can be called from other threads)
 	 */