[FIX] project_issue: reviewer_id doesn(t exist

(partial revert of 44a5268c)

addons/project_issue/report/project_issue_report_view.xml

@@ -21,13 +21,6 @@
             <field name="user_id" eval="False"/>
             <field name="context">{'group_by': ['project_id', 'user_id']}</field>
         </record>
-        <record id="filter_issue_report_reviewer" model="ir.filters">
-            <field name="name">By Reviewer</field>
-            <field name="model_id">project.issue.report</field>
-            <field name="domain">[]</field>
-            <field name="user_id" eval="False"/>
-            <field name="context">{'group_by': ['project_id', 'reviewer_id']}</field>
-        </record>
 
         <record id="view_project_issue_report_filter" model="ir.ui.view">
             <field name="name">project.issue.report.select</field>