Set prime tower size by default to 20

This was found by the materials team to be a better value. All UM3 profiles have 20 now. I've left the third-party machines intact which override the prime tower size but those that didn't override the prime tower size have their prime tower size altered as well.

resources/definitions/fdmprinter.def.json

@@ -4216,7 +4216,7 @@
                     "type": "float",
                     "unit": "mm",
                     "enabled": "resolveOrValue('prime_tower_enable')",
-                    "default_value": 15,
+                    "default_value": 20,
                     "resolve": "max(extruderValues('prime_tower_size'))",
                     "minimum_value": "0",
                     "maximum_value": "min(0.5 * machine_width, 0.5 * machine_depth)",

resources/quality/ultimaker3/um3_aa0.4_ABS_Draft_Print.inst.cfg

@@ -15,7 +15,6 @@ machine_nozzle_heat_up_speed = 1.5
 material_print_temperature = =default_material_print_temperature + 10
 material_initial_print_temperature = =material_print_temperature - 5
 material_final_print_temperature = =material_print_temperature - 10
-prime_tower_size = 16
 skin_overlap = 20
 speed_print = 60
 speed_layer_0 = 20

resources/quality/ultimaker3/um3_aa0.4_ABS_Fast_Print.inst.cfg

@@ -17,7 +17,6 @@ material_print_temperature = =default_material_print_temperature + 5
 material_initial_print_temperature = =material_print_temperature - 5
 material_final_print_temperature = =material_print_temperature - 10
 material_standby_temperature = 100
-prime_tower_size = 16
 speed_print = 60
 speed_layer_0 = 20
 speed_topbottom = =math.ceil(speed_print * 30 / 60)

resources/quality/ultimaker3/um3_aa0.4_ABS_High_Quality.inst.cfg

@@ -17,7 +17,6 @@ material_standby_temperature = 100
 material_print_temperature = =default_material_print_temperature - 5
 material_initial_print_temperature = =material_print_temperature - 5
 material_final_print_temperature = =material_print_temperature - 10
-prime_tower_size = 16
 speed_print = 50
 speed_layer_0 = 20
 speed_topbottom = =math.ceil(speed_print * 30 / 50)

resources/quality/ultimaker3/um3_aa0.4_ABS_Normal_Quality.inst.cfg

@@ -15,7 +15,6 @@ machine_nozzle_heat_up_speed = 1.5
 material_initial_print_temperature = =material_print_temperature - 5
 material_final_print_temperature = =material_print_temperature - 10
 material_standby_temperature = 100
-prime_tower_size = 16
 speed_print = 55
 speed_layer_0 = 20
 speed_topbottom = =math.ceil(speed_print * 30 / 55)

resources/quality/ultimaker3/um3_aa0.4_CPEP_Draft_Print.inst.cfg

@@ -29,7 +29,6 @@ material_print_temperature_layer_0 = =material_print_temperature
 material_standby_temperature = 100
 multiple_mesh_overlap = 0
 prime_tower_enable = True
-prime_tower_size = 17
 prime_tower_wipe_enabled = True
 retraction_combing = off
 retraction_extrusion_window = 1

resources/quality/ultimaker3/um3_aa0.4_CPEP_Fast_Print.inst.cfg

@@ -29,7 +29,6 @@ material_print_temperature_layer_0 = =material_print_temperature
 material_standby_temperature = 100
 multiple_mesh_overlap = 0
 prime_tower_enable = True
-prime_tower_size = 17
 prime_tower_wipe_enabled = True
 retraction_combing = off
 retraction_extrusion_window = 1

resources/quality/ultimaker3/um3_aa0.4_CPEP_High_Quality.inst.cfg

@@ -31,7 +31,6 @@ material_print_temperature_layer_0 = =material_print_temperature
 material_standby_temperature = 100
 multiple_mesh_overlap = 0
 prime_tower_enable = True
-prime_tower_size = 17
 prime_tower_wipe_enabled = True
 retraction_combing = off
 retraction_extrusion_window = 1

resources/quality/ultimaker3/um3_aa0.4_CPEP_Normal_Quality.inst.cfg

@@ -30,7 +30,6 @@ material_print_temperature_layer_0 = =material_print_temperature
 material_standby_temperature = 100
 multiple_mesh_overlap = 0
 prime_tower_enable = True
-prime_tower_size = 17
 prime_tower_wipe_enabled = True
 retraction_combing = off
 retraction_extrusion_window = 1

resources/quality/ultimaker3/um3_aa0.4_CPE_Draft_Print.inst.cfg

@@ -14,7 +14,6 @@ material_print_temperature = =default_material_print_temperature + 10
 material_initial_print_temperature = =material_print_temperature - 5
 material_final_print_temperature = =material_print_temperature - 10
 material_standby_temperature = 100
-prime_tower_size = 17
 skin_overlap = 20
 speed_print = 60
 speed_layer_0 = 20