cleanup comments

ArduPlane/commands_logic.cpp

@@ -19,7 +19,7 @@ bool Plane::start_command(const AP_Mission::Mission_Command& cmd)
         auto_state.land_pre_flare = false;
         auto_state.sink_rate = 0;
 
-        // set takeoff_complete to true so we don't add extra evevator
+        // set takeoff_complete to true so we don't add extra elevator
         // except in a takeoff
         auto_state.takeoff_complete = true;
 

libraries/AP_RangeFinder/RangeFinder.cpp

@@ -118,8 +118,6 @@ const AP_Param::GroupInfo RangeFinder::var_info[] = {
     // @User: Standard
     AP_GROUPINFO("_GNDCLEAR", 11, RangeFinder, _ground_clearance_cm[0], RANGEFINDER_GROUND_CLEARANCE_CM_DEFAULT),
 
-    // 10..12 left for future expansion
-
 #if RANGEFINDER_MAX_INSTANCES > 1
     // @Param: 2_TYPE
     // @DisplayName: Second Rangefinder type