AC_PosControl: remove 20cm on takeoff

libraries/AC_AttitudeControl/AC_PosControl.h

@@ -21,7 +21,7 @@
 #define POSCONTROL_STOPPING_DIST_Z_MAX          200.0f  // max stopping distance vertically   
                                                         // should be 1.5 times larger than POSCONTROL_ACCELERATION.
                                                         // max acceleration = max lean angle * 980 * pi / 180.  i.e. 23deg * 980 * 3.141 / 180 = 393 cm/s/s
-#define POSCONTROL_TAKEOFF_JUMP_CM               20.0f  // during take-off altitude target is set to current altitude + this value
+#define POSCONTROL_TAKEOFF_JUMP_CM                0.0f  // during take-off altitude target is set to current altitude + this value
 
 #define POSCONTROL_SPEED                        500.0f  // default horizontal speed in cm/s
 #define POSCONTROL_SPEED_DOWN                  -150.0f  // default descent rate in cm/s