Drop hsqldb support.

testing/config.hsqldb.properties

@@ -1,18 +0,0 @@
-# The port to Listen on.
-PORT: 8080
-
-# Proxy
-PROXY_PART: https://pipedproxy-ams.kavin.rocks
-
-# Public API URL
-API_URL: https://pipedapi.kavin.rocks
-
-# Public Frontend URL
-FRONTEND_URL: https://piped.video
-
-# Hibernate properties
-hibernate.connection.url: jdbc:hsqldb:mem:memdb;sql.syntax_pgs=true
-hibernate.connection.driver_class: org.hsqldb.jdbcDriver
-hibernate.dialect: org.hibernate.dialect.HSQLDialect
-hibernate.connection.username: piped
-hibernate.connection.password: changeme

testing/docker-compose.hsqldb.yml

@@ -1,8 +0,0 @@
-services:
-    piped:
-        image: 1337kavin/piped:latest
-        restart: unless-stopped
-        ports:
-            - "127.0.0.1:8080:8080"
-        volumes:
-            - ./config.hsqldb.properties:/app/config.properties