bed_mesh: Do not automatically run G28 on BED_MESH_CALIBRATE / BED_MESH_MAP

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>

docs/G-Codes.md

@@ -186,7 +186,7 @@ section is enabled:
   terminal.  This allows octoprint plugins to easily capture the
   data and generate maps approximating the bed's surface.  Note
   that although no mesh is generated, any currently stored mesh
-  will be cleared as the process rehomes the printer.
+  will be cleared.
 - `BED_MESH_CLEAR`: This command clears the mesh and removes all
   z adjustment.  It is recommended to put this in your end-gcode.
 - `BED_MESH_PROFILE LOAD=<name> SAVE=<name> REMOVE=<name>`: This

klippy/extras/bed_mesh.py

@@ -311,7 +311,6 @@ class BedMeshCalibrate:
         self.start_calibration(params)
     def start_calibration(self, params):
         self.bedmesh.set_mesh(None)
-        self.gcode.run_script_from_command("G28")
         self.probe_helper.start_probe(params)
     def print_probed_positions(self, print_func):
         if self.probed_z_table is not None: