Remove unused requestDefaults from Probo node

The Probo node implements execute() directly, so n8n never applies
requestDefaults from the node description. Drop the dead block flagged
in marketplace review.

Signed-off-by: Cursor Agent <cursoragent@cursor.com>

Co-authored-by: Bryan FRIMIN <bryan@frimin.fr>

packages/n8n-node/nodes/Probo/Probo.node.ts

@@ -52,12 +52,6 @@ export class Probo implements INodeType {
 				},
 			},
 		],
-		requestDefaults: {
-			headers: {
-				Accept: 'application/json',
-				'Content-Type': 'application/json',
-			},
-		},
 		properties: [
 			{
 				displayName: 'Authentication',