[FIX] sale: removed wrong and duplicated sales team groubby

The section_id field has been renamed to team_id in 9.0. Moreover,
the Sales Team group by is already present in the view from which
this one was inheriting, resulting in duplicated group by's.

addons/sale/__openerp__.py

@@ -51,7 +51,6 @@ The Dashboard for the Sales Manager will include
         'sales_team_view.xml',
         'res_partner_view.xml',
         'report/sale_report_view.xml',
-        'report/invoice_report_view.xml',
         'data/mail_template_data.xml',
         'res_config_view.xml',
         'views/report_saleorder.xml',

addons/sale/report/invoice_report_view.xml

-<?xml version="1.0" encoding="UTF-8"?>
-<openerp>
-	<data>
-		<record model="ir.ui.view" id="view_account_invoice_report_search_inherit">
-			<field name="name">account.invoice.report.search</field>
-			<field name="model">account.invoice.report</field>
-			<field name="inherit_id" ref="account.view_account_invoice_report_search" />
-			<field name="arch" type="xml">
-				<filter name="user" position="after">
-					<filter string="Sales Team" domain="[]"
-						context="{'group_by':'section_id'}"/>
-				</filter>
-			</field>
-		</record>
-
-	</data>
-</openerp>
\ No newline at end of file