Copter: remove unused OF_LOITER pid defines

ArduCopter/APM_Config.h

@@ -33,7 +33,7 @@
 //#define EPM_ENABLED           ENABLED             // enable epm cargo gripper costs 500bytes of flash
 //#define CLI_ENABLED           ENABLED             // enable the CLI (command-line-interface) at a cost of 21K of flash space
 //#define NAV_GUIDED            ENABLED             // enable external navigation computer to control vehicle through MAV_CMD_NAV_GUIDED mission commands
-//#define OPTFLOW               ENABLED             // enable optical flow sensor and OF_LOITER flight mode at a cost of 5K of flash space
+//#define OPTFLOW               ENABLED             // enable optical flow sensor at a cost of 5K of flash space
 
 // features below are disabled by default on all boards
 //#define SPRAYER               ENABLED             // enable the crop sprayer feature (two ESC controlled pumps the speed of which depends upon the vehicle's horizontal velocity)

ArduCopter/config.h

@@ -394,28 +394,6 @@
   # define OPTFLOW       DISABLED
  #endif
 #endif
-// optical flow based loiter PI values
-#ifndef OPTFLOW_ROLL_P
- #define OPTFLOW_ROLL_P 2.5f
-#endif
-#ifndef OPTFLOW_ROLL_I
- #define OPTFLOW_ROLL_I 0.5f
-#endif
-#ifndef OPTFLOW_ROLL_D
- #define OPTFLOW_ROLL_D 0.12f
-#endif
-#ifndef OPTFLOW_PITCH_P
- #define OPTFLOW_PITCH_P 2.5f
-#endif
-#ifndef OPTFLOW_PITCH_I
- #define OPTFLOW_PITCH_I 0.5f
-#endif
-#ifndef OPTFLOW_PITCH_D
- #define OPTFLOW_PITCH_D 0.12f
-#endif
-#ifndef OPTFLOW_IMAX
- #define OPTFLOW_IMAX 100
-#endif
 
 //////////////////////////////////////////////////////////////////////////////
 //  Auto Tuning