[IMP] mrp: no help in workorder tablet view

For the `mrp.routing.workcenter`, removes the help from the `worksheet`
field to set it into the view.
This way, the tooltip doesn't appear each time the user cursor is placed
in front of the pdf in the workorder tablet view (`mpr_workorder`).

task-2225362

closes odoo/odoo#48903

Signed-off-by: Simon Lejeune (sle) <sle@openerp.com>

addons/mrp/models/mrp_routing.py

@@ -50,7 +50,7 @@ class MrpRoutingWorkcenter(models.Model):
     company_id = fields.Many2one(
         'res.company', 'Company',
         readonly=True, related='routing_id.company_id', store=True)
-    worksheet = fields.Binary('PDF', help="Upload your PDF file.")
+    worksheet = fields.Binary('PDF')
     worksheet_type = fields.Selection([
         ('pdf', 'PDF'), ('google_slide', 'Google Slide')],
         string="Work Sheet", default="pdf",

addons/mrp/views/mrp_routing_views.xml

@@ -55,7 +55,7 @@
                             <page string="Work Sheet" name="worksheet">
                                 <group>
                                     <field name="worksheet_type" widget="radio"/>
-                                    <field name="worksheet" widget="pdf_viewer" attrs="{'invisible':  [('worksheet_type', '=', 'google_slide')]}"/>
+                                    <field name="worksheet" help="Upload your PDF file." widget="pdf_viewer" attrs="{'invisible':  [('worksheet_type', '=', 'google_slide')]}"/>
                                     <field name="worksheet_google_slide" placeholder="Google Slide Link" widget="embed_viewer" attrs="{'invisible':  [('worksheet_type', '=', 'pdf')]}"/>
                                 </group>
                             </page>