Simplify .gitignore configuration

These files have been added to the `sculpin-site` template in Build
Configs.

.gitignore

@@ -1,11 +1,13 @@
 # Do not edit this file. It is automatically generated by https://www.oliverdavies.uk/build-configs.
 
+/.phpunit.cache
 /.phpunit.result.cache
 /output_*/
 /vendor/
 
+# Front-end assets.
+node_modules
+source/build
+
 /.direnv/
 
-/.phpunit.cache/
-/assets/node_modules/
-/source/build/

build.yaml

@@ -10,9 +10,3 @@ flake:
       - nodejs
       - php82
       - php82Packages.composer
-
-git:
-  ignore:
-    - '/.phpunit.cache/'
-    - '/assets/node_modules/'
-    - '/source/build/'