fix(docker): remove compose files for pdns tests

docker-compose.tests.api.yml

@@ -1,3 +0,0 @@
-nslord-tests-api:
-  build: nslord
-  dockerfile: Dockerfile.regression-tests.api

docker-compose.tests.yml

@@ -1,8 +0,0 @@
-nslord-tests:
-  build: nslord
-  dockerfile: Dockerfile.regression-tests
-  links:
-   - db
-  environment:
-   - GMYSQLPASSWD=test123
-   - GMYSQLHOST=db