DELTA_TOWER_ANGLE_TRIM only needs AB

Marlin/Conditionals_post.h

       #define DELTA_ENDSTOP_ADJ { 0.0, 0.0, 0.0 }
     #endif
     #ifndef DELTA_TOWER_ANGLE_TRIM
-      #define DELTA_TOWER_ANGLE_TRIM {0.0, 0.0, 0.0}
+      #define DELTA_TOWER_ANGLE_TRIM { 0.0, 0.0 } // C always 0.0
     #endif
     #ifndef DELTA_RADIUS_TRIM_TOWER
-      #define DELTA_RADIUS_TRIM_TOWER {0.0, 0.0, 0.0}
+      #define DELTA_RADIUS_TRIM_TOWER { 0.0, 0.0, 0.0 }
     #endif
     #ifndef DELTA_DIAGONAL_ROD_TRIM_TOWER
-      #define DELTA_DIAGONAL_ROD_TRIM_TOWER {0.0, 0.0, 0.0}
+      #define DELTA_DIAGONAL_ROD_TRIM_TOWER { 0.0, 0.0, 0.0 }
     #endif
   #endif
 

Marlin/configuration_store.cpp

 
   #if ENABLED(DELTA)
     const float adj[ABC] = DELTA_ENDSTOP_ADJ,
-                dta[ABC] = DELTA_TOWER_ANGLE_TRIM;
+                dta[2] = DELTA_TOWER_ANGLE_TRIM;
     COPY(endstop_adj, adj);
     delta_radius = DELTA_RADIUS;
     delta_diagonal_rod = DELTA_DIAGONAL_ROD;

Marlin/example_configurations/delta/FLSUN/auto_calibrate/Configuration.h

   // Trim adjustments for individual towers
   // tower angle corrections for X and Y tower / rotate XYZ so Z tower angle = 0
   // measured in degrees anticlockwise looking from above the printer
-  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00, 0.00 } // get these from auto calibrate
+  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00 } // get these from auto calibrate
 
   // delta radius and diaginal rod adjustments measured in mm
   //#define DELTA_RADIUS_TRIM_TOWER {0.0, 0.0, 0.0}

Marlin/example_configurations/delta/FLSUN/kossel_mini/Configuration.h

   // Trim adjustments for individual towers
   // tower angle corrections for X and Y tower / rotate XYZ so Z tower angle = 0
   // measured in degrees anticlockwise looking from above the printer
-  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00, 0.00 } // get these from auto calibrate
+  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00 } // get these from auto calibrate
 
   // delta radius and diaginal rod adjustments measured in mm
   //#define DELTA_RADIUS_TRIM_TOWER {0.0, 0.0, 0.0}

Marlin/example_configurations/delta/generic/Configuration.h

   // Trim adjustments for individual towers
   // tower angle corrections for X and Y tower / rotate XYZ so Z tower angle = 0
   // measured in degrees anticlockwise looking from above the printer
-  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00, 0.00 } // get these from auto calibrate
+  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00 } // get these from auto calibrate
 
   // delta radius and diaginal rod adjustments measured in mm
   //#define DELTA_RADIUS_TRIM_TOWER {0.0, 0.0, 0.0}

Marlin/example_configurations/delta/kossel_mini/Configuration.h

   // Trim adjustments for individual towers
   // tower angle corrections for X and Y tower / rotate XYZ so Z tower angle = 0
   // measured in degrees anticlockwise looking from above the printer
-  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00, 0.00 } // get these from auto calibrate
+  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00 } // get these from auto calibrate
 
   // delta radius and diaginal rod adjustments measured in mm
   //#define DELTA_RADIUS_TRIM_TOWER {0.0, 0.0, 0.0}

Marlin/example_configurations/delta/kossel_pro/Configuration.h

   // Trim adjustments for individual towers
   // tower angle corrections for X and Y tower / rotate XYZ so Z tower angle = 0
   // measured in degrees anticlockwise looking from above the printer
-  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00, 0.00 } // get these from auto calibrate
+  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00 } // get these from auto calibrate
 
   // delta radius and diaginal rod adjustments measured in mm
   //#define DELTA_RADIUS_TRIM_TOWER {0.0, 0.0, 0.0}

Marlin/example_configurations/delta/kossel_xl/Configuration.h

   // Trim adjustments for individual towers
   // tower angle corrections for X and Y tower / rotate XYZ so Z tower angle = 0
   // measured in degrees anticlockwise looking from above the printer
-  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00, 0.00 } // get these from auto calibrate
+  #define DELTA_TOWER_ANGLE_TRIM { 0.00, 0.00 } // get these from auto calibrate
 
   // delta radius and diaginal rod adjustments measured in mm
   //#define DELTA_RADIUS_TRIM_TOWER {0.0, 0.0, 0.0}