fixing watch delete (#30989) (#31006)

x-pack/plugins/watcher/public/services/watches/watches_service.js

@@ -32,11 +32,10 @@ export class WatchesService {
     // $http.delete does not take the request body as the 2nd argument. Instead it expects the 2nd
     // argument to be a request options object, one of which can be the request body (data). We also
     // need to explicitly define the content type of the data.
-    const requestOpts = {
-      data: { watchIds },
-      headers: { 'Content-Type': 'application/json' }
+    const body = {
+      watchIds
     };
-    return this.$http.delete(`${this.basePath}/watches`, requestOpts)
+    return this.$http.post(`${this.basePath}/watches/delete`, body)
       .then(response => response.data.results);
   }
 }

x-pack/plugins/watcher/server/routes/api/watches/register_delete_route.js

@@ -34,8 +34,8 @@ export function registerDeleteRoute(server) {
   const licensePreRouting = licensePreRoutingFactory(server);
 
   server.route({
-    path: '/api/watcher/watches',
-    method: 'DELETE',
+    path: '/api/watcher/watches/delete',
+    method: 'POST',
     handler: async (request) => {
       const callWithRequest = callWithRequestFactory(server, request);