Describe the bug

I believe with the introduction of external data sources PR DELETE requests using the Literest endpoint is broken.

Following error output is observed

HTTP/1.1 500 Internal Server Error
Transfer-Encoding: chunked
Content-Type: application/json
Content-Encoding: gzip

{
  "error": "SQL_PARSE_ERROR: SQL string could not be parsed: syntax error around L1:21: `.1`"
}

I believe this is down to the path parsing here, when a pk path parameter is provided it treats it as schema being provided.

To Reproduce

1. Create a simple users table create table users (id integer primary key, name text)
2. Insert a single row insert into users (name) values ('Jay Jamieson')
3. Run the following DELETE request from documentation

curl --location --request DELETE 'http://127.0.0.1:8787/rest/users/1' \
--header 'Authorization: Bearer ABC123'

Expected behavior

Resource is deleted by provided resource PK ID per the current documentation.