[IMP] partner_statement: remove "blocked" feature

If someone comes from v17 or older Odoo versions, and they still have "blocked" lines, there are three options for them:

- Develop glue module with another module that contains "blocked" field.
- Don't use this commit.
- Solve the "blocked" lines.

Good luck!

partner_statement/views/outstanding_statement.xml

@@ -21,11 +21,7 @@
                 </tr>
             </thead>
             <tbody>
-                <tr
-                    t-foreach="currency[line_type]"
-                    t-as="line"
-                    t-att-class="'statement-blocked' if line['blocked'] else ''"
-                >
+                <tr t-foreach="currency[line_type]" t-as="line" t-att-class="''">
                     <td>
                         <span t-out="line['move_id']" />
                     </td>