test: Remove Kotlin examples (#2953)

- The Kotlin examples now live in the sqlc-gen-kotlin repository
- Run a subset of the tests in the sqlc-gen-kotlin directory

Author: kyleconroy

.github/workflows/ci-kotlin.yml

@@ -5,48 +5,22 @@ on:
       - main
   pull_request:
 jobs:
-
   build:
     name: test
     runs-on: ubuntu-latest
-
-    services:
-      postgres:
-        image: postgres:11
-        env:
-          POSTGRES_USER: postgres
-          POSTGRES_PASSWORD: postgres
-          POSTGRES_DB: postgres
-        ports:
-          - 5432:5432
-        # needed because the postgres container does not provide a healthcheck
-        options: --health-cmd pg_isready --health-interval 10s --health-timeout 5s --health-retries 5
-      mysql:
-        image: mysql:8
-        env:
-          MYSQL_ROOT_PASSWORD: mysecretpassword
-          MYSQL_DATABASE: mysql
-        ports:
-          - 3306:3306
-
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-java@v3
+      - uses: actions/setup-go@v4
         with:
-          distribution: 'adopt'
-          java-version: '11'
-      - uses: eskatos/gradle-command-action@v2
-        env:
-          PG_USER: postgres
-          PG_HOST: localhost
-          PG_DATABASE: postgres
-          PG_PASSWORD: postgres
-          PG_PORT: ${{ job.services.postgres.ports['5432'] }}
-          MYSQL_DATABASE: mysql
-          MYSQL_HOST: localhost
-          MYSQL_PORT: ${{ job.services.mysql.ports['3306'] }}
-          MYSQL_ROOT_PASSWORD: mysecretpassword
+          go-version: '1.21.3'
+      - name: install ./...
+        run: go install ./...
+      - uses: actions/checkout@v4
         with:
-          build-root-directory: examples/kotlin
-          wrapper-directory: examples/kotlin
-          arguments: test --scan
+          repository: sqlc-dev/sqlc-gen-kotlin
+          path: kotlin
+      - run: make test
+        working-directory: kotlin
+      - run: sqlc diff
+        working-directory: kotlin/examples
+