AP_HAL_Linux: enable console for examples

Turns out we *do* need this for examples.  We're back to stuffing up
terminals where examples have been run, but that can be addressed later.

libraries/AP_HAL_Linux/ConsoleDevice.cpp

@@ -28,7 +28,7 @@ bool ConsoleDevice::close()
 
 bool ConsoleDevice::open()
 {
-#if APM_BUILD_TYPE(APM_BUILD_Replay) || APM_BUILD_TYPE(APM_BUILD_UNKNOWN)
+#if APM_BUILD_TYPE(APM_BUILD_Replay)
     // we do not want a ConsoleDevice for Replay or any examples.  It
     // screws up the terminal settings and creates all sorts of
     // weirdnesses in Replay's output.