Remove maximum warning for gradual infill step height

That 100mm figure was weird. 9cm was fine, but 10cm not? It's all going to print fine, really.

Contributes to issue CURA-3960.

resources/definitions/fdmprinter.def.json

@@ -1278,7 +1278,6 @@
                     "default_value": 1.5,
                     "minimum_value": "0.0001",
                     "minimum_value_warning": "3 * resolveOrValue('layer_height')",
-                    "maximum_value_warning": "100",
                     "enabled": "infill_sparse_density > 0 and gradual_infill_steps > 0 and infill_pattern != 'cubicsubdiv'",
                     "settable_per_mesh": true
                 },