remove gradient_rotations from 2d/batch2d ui.json files

Author: benk-mira

simpeg_drivers-assets/uijson/direct_current_2d_inversion.ui.json

@@ -285,6 +285,7 @@
         "label": "Gradient rotation",
         "optional": true,
         "enabled": false,
+        "visible": false,
         "parent": "mesh",
         "value": ""
     },

simpeg_drivers-assets/uijson/direct_current_batch2d_inversion.ui.json

@@ -267,6 +267,7 @@
         "label": "Gradient rotation",
         "optional": true,
         "enabled": false,
+        "visible": false,
         "parent": "mesh",
         "value": ""
     },

simpeg_drivers-assets/uijson/induced_polarization_2d_inversion.ui.json

@@ -294,6 +294,7 @@
         "label": "Gradient rotation",
         "optional": true,
         "enabled": false,
+        "visible": false,
         "parent": "mesh",
         "value": ""
     },

simpeg_drivers-assets/uijson/induced_polarization_batch2d_inversion.ui.json

@@ -278,6 +278,7 @@
         "label": "Gradient rotation",
         "optional": true,
         "enabled": false,
+        "visible": false,
         "parent": "mesh",
         "value": ""
     },