ci: remove PHPUnit, PHPStan and PHPCS

Remove these checks as there are no custom modules.

run

@@ -21,9 +21,7 @@ function ci:test {
 
   composer install --quiet --no-progress
 
-  test --testdox
 
-  quality
 }
 
 # Run a command within the php container.
@@ -31,9 +29,6 @@ function cmd {
   docker compose exec php "${@}"
 }
 
-function coding-standards {
-  cmd phpcs "${@}"
-}
 
 function composer {
   _exec php composer "${@}"
@@ -65,10 +60,6 @@ function lint:dockerfile {
     hadolint/hadolint hadolint --ignore DL3008 --ignore DL3059 -t style "${@}" - < Dockerfile
 }
 
-function quality {
-  coding-standards
-  static-analysis
-}
 
 function start {
   cp -v --no-clobber .env.example .env
@@ -76,22 +67,13 @@ function start {
   docker compose up -d
 }
 
-function static-analysis {
-  cmd phpstan --memory-limit=-1 --no-progress "${@}"
-}
 
 function stop {
   docker compose down
 }
 
-function test {
-  _exec php phpunit --colors=always "${@}"
-}
 
 function test:commit {
-  test --testdox --testsuite functional
-  test --testdox --testsuite kernel
-  test --testdox --testsuite unit
 
   quality
 }