Remove PID iterm constrain for NAV PID controller

src/main/fc/settings.yaml

@@ -1235,7 +1235,7 @@ groups:
         min: 0
         max: 255
       - name: nav_fw_pos_hdg_pidsum_limit
-        field: pidSumLimitYaw
+        field: navFwPosHdgPidsumLimit
         min: PID_SUM_LIMIT_MIN
         max: PID_SUM_LIMIT_MAX
       - name: mc_iterm_relax_type

src/main/flight/pid.h

@@ -150,7 +150,7 @@ typedef struct pidProfile_s {
     float antigravityAccelerator;
     uint8_t antigravityCutoff;
 
-    int navFwPosHdgPidsumLimit;
+    uint16_t navFwPosHdgPidsumLimit;
 } pidProfile_t;
 
 typedef struct pidAutotuneConfig_s {

src/main/navigation/navigation.c

@@ -1863,11 +1863,6 @@ float navPidApply3(pidController_t *pid, const float setpoint, const float measu
         }
     }
 
-    /*
-     * Limit both output and Iterm to limit windup
-     */
-    pid->integrator = constrain(pid->integrator, outMin, outMax);
-
     return outValConstrained;
 }