Fix: The panel could not be used in the EDIT MODE. T62804

The panel could not be used in the EDIT MODE because I wrongly inserted a
'bl_context = "objectmode"' last time. I removed this line.

io_mesh_atomic/utility_gui.py

@@ -39,7 +39,6 @@ class PANEL_PT_prepare(Panel):
     bl_space_type  = "VIEW_3D"
     bl_region_type = "UI"
     bl_options     = {'DEFAULT_CLOSED'}
-    bl_context = "objectmode"
     bl_category = "Tools"
     bl_idname = "ATOMIC_PT_utilities"