Avoid trying to optimise static serving of the calculator app, since the nginx...

Avoid trying to optimise static serving of the calculator app, since the nginx configuration doesn't read symlinks anyway.

app-config/nginx/calculator-static

-../../cara/apps/calculator/static
\ No newline at end of file

app-config/nginx/nginx.conf

@@ -61,11 +61,6 @@ http {
         }
         rewrite ^/expert-app$ /voila-server/voila/render/cara.ipynb last;
 
-        # Give the static content of the calculator app a sensible name which is
-        # consistent with the static directory of the calculator webserver used
-        # for development.
-        rewrite ^/calculator/static/(.*)$ /calculator-static/$1 last;
-
         # Before implementing the nginx router we could access /voila/render/cara.ipynb.
         # Redirect this (and all other) URLs to the new scheme.
         absolute_redirect off;