Remove override for prime tower position

The formula in the fdmprinter definition does it's job, so no need to change it!

CURA-6943

resources/definitions/ultimaker_s3.def.json

@@ -67,8 +67,6 @@
         "extruder_prime_pos_abs": { "default_value": true },
         "machine_start_gcode": { "default_value": "" },
         "machine_end_gcode": { "default_value": "" },
-        "prime_tower_position_x": { "value": "345" },
-        "prime_tower_position_y": { "value": "222.5" },
         "prime_blob_enable": { "enabled": true, "default_value": false },
 
         "speed_travel":