Remove the generate-config task

[stuartwdouglas]

AFAIK we have never really promoted this, and it is far less functional
than the Dev UI config editor (especially given the number of properties
that we expose these days).

[quarkus-bot]

Failing Jobs - Building e46de36

Status	Name	Step	Failures	Logs	Raw logs
✖	JVM Tests - JDK 11	Build	Failures	Logs	Raw logs
✖	JVM Tests - JDK 17	Build	Failures	Logs	Raw logs

Full information is available in the Build summary check run.

Failures

⚙️ JVM Tests - JDK 11 #

- Failing: integration-tests/oidc 

📦 integration-tests/oidc

✖ io.quarkus.it.keycloak.WebsocketOidcTestCase.websocketTest line 49 - More details - Source on GitHub

org.opentest4j.AssertionFailedError: expected: <hello [email protected]> but was: <null>
	at org.junit.jupiter.api.AssertionUtils.fail(AssertionUtils.java:55)
	at org.junit.jupiter.api.AssertionUtils.failNotEqual(AssertionUtils.java:62)

---

⚙️ JVM Tests - JDK 17 #

- Failing: extensions/hibernate-orm/deployment integration-tests/oidc 
! Skipped: docs extensions/hibernate-envers/deployment extensions/hibernate-reactive/deployment and 84 more

📦 extensions/hibernate-orm/deployment

✖ io.quarkus.hibernate.orm.transaction.UserTransactionLifecycleTest. - More details - Source on GitHub

java.lang.AssertionError: 

Expecting empty but was: ["Thread Thread[vert.x-eventloop-thread-0,5,main] has been blocked for 3939 ms, time limit is 2000 ms",

📦 integration-tests/oidc

✖ io.quarkus.it.keycloak.WebsocketOidcTestCase.websocketTest line 49 - More details - Source on GitHub

org.opentest4j.AssertionFailedError: expected: <hello [email protected]> but was: <null>
	at org.junit.jupiter.api.AssertionUtils.fail(AssertionUtils.java:55)
	at org.junit.jupiter.api.AssertionUtils.failNotEqual(AssertionUtils.java:62)