Update project_import_export.md. Removed cURL statement

doc/api/project_import_export.md

@@ -28,11 +28,6 @@ POST /projects/:id/export
 | `upload[url]`      | string | yes      | The URL to upload the project |
 | `upload[http_method]`      | string | no      | The HTTP method to upload the exported project. Only `PUT` and `POST` methods allowed. Default is `PUT` |
 
-```console
-curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/projects/1/export --data "description=FooBar&upload[http_method]=PUT&upload[url]=https://example-bucket.s3.eu-west-3.amazonaws.com/backup?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIMBJHN2O62W8IELQ%2F20180312%2Feu-west-3%2Fs3%2Faws4_request&X-Amz-Date=20180312T110328Z&X-Amz-Expires=900&X-Amz-SignedHeaders=host&X-Amz-Signature=8413facb20ff33a49a147a0b4abcff4c8487cc33ee1f7e450c46e8f695569dbd"
-```
-
-Some systems may require the upload url to be url-encoded:
 
 ```console
 curl --request POST --header "PRIVATE-TOKEN: 9koXpg98eAheJpvBs5tK" https://gitlab.example.com/api/v4/projects/1/export \