[FIX] web_editor: Image crop option not working

Current behaviour before commit:

When pressing crop button, crop widget is not getting
opened and 'connection lost' notification is appeared.
This happens because in wysiwyg.js file _rpc function
does not get the proper arguments from loadImageInfo
function.

Desired behaviour after commit:

Now, _rpc function is removed from wysiwyg.js as it
doesn't need anymore and _serviceRpc is passed directly
through the props. As result crop option works.

task-3546160

closes odoo/odoo#138482

Signed-off-by: Nicolas Bayet (nby) <nby@odoo.com>

addons/web_editor/static/src/js/wysiwyg/wysiwyg.js

@@ -132,7 +132,7 @@ export class Wysiwyg extends Component {
         }),
     }
     imageCropProps = useState({
-        rpc: this._rpc.bind(this),
+        rpc: this._serviceRpc.bind(this),
         showCount: 0,
         media: undefined,
         mimetype: undefined,
@@ -3505,9 +3505,6 @@ export class Wysiwyg extends Component {
             xhr: settings.xhr,
         });
     }
-    _rpc({ route,  params }) {
-        return this._serviceRpc(route, params)
-    }
 }
 Wysiwyg.activeCollaborationChannelNames = new Set();
 Wysiwyg.activeWysiwygs = new Set();