Clean up .htaccess

* fixes #5740

public/.htaccess.in

@@ -1,15 +1,7 @@
-SetEnv APPLICATION_ENV development
-
 RewriteEngine on
 RewriteBase @web_path@
-RewriteRule ^css/icinga.css css.php
-RewriteRule ^js/icinga.min.js js.php
 RewriteCond %{REQUEST_FILENAME} -s [OR]
 RewriteCond %{REQUEST_FILENAME} -l [OR]
 RewriteCond %{REQUEST_FILENAME} -d
 RewriteRule ^.*$ - [NC,L]
 RewriteRule ^.*$ index.php [NC,L]
-
-php_flag short_open_tag on
-
-php_value xdebug.idekey PHPSTORM