Merge pull request iNavFlight#10201 from sensei-hacker/remove_used_platform_other

mixer.h: PLATFORM_OTHER isn't valid, remove

Author: DzikuVx

src/main/flight/mixer.h

@@ -40,8 +40,7 @@ typedef enum {
     PLATFORM_HELICOPTER     = 2,
     PLATFORM_TRICOPTER      = 3,
     PLATFORM_ROVER          = 4,
-    PLATFORM_BOAT           = 5,
-    PLATFORM_OTHER          = 6
+    PLATFORM_BOAT           = 5
 } flyingPlatformType_e;
 
 
@@ -132,4 +131,4 @@ void stopPwmAllMotors(void);
 void loadPrimaryMotorMixer(void);
 bool areMotorsRunning(void);
 
-uint16_t getMaxThrottle(void);
+uint16_t getMaxThrottle(void);