Remove obsolete and out-of-place hints about starting postgreSQL from Hibernate ORM guides

People should get such information from the datasource guide, which will tell them to just use dev services anyway.

Author: yrodiere

docs/src/main/asciidoc/hibernate-orm.adoc

@@ -312,20 +312,6 @@ quarkus.hibernate-orm.persistence-xml.ignore=true
 ----
 ====
 
-[TIP]
-====
-Want to start a PostgreSQL server on the side with Docker?
-
-[source,bash]
-----
-docker run --rm=true --name postgres-quarkus-hibernate -e POSTGRES_USER=hibernate \
-           -e POSTGRES_PASSWORD=hibernate -e POSTGRES_DB=hibernate_db \
-           -p 5432:5432 postgres:14.1
-----
-
-This will start a non-durable empty database: ideal for a quick experiment!
-====
-
 [[multiple-persistence-units]]
 === Multiple persistence units
 

docs/src/main/asciidoc/hibernate-reactive.adoc

@@ -196,20 +196,6 @@ The configuration properties listed here allow you to override such defaults, an
 Hibernate Reactive uses the same properties you would use for Hibernate ORM: see <<configuration-reference>>. You will notice that some properties
 contain `jdbc` in the name but there is no JDBC in Hibernate Reactive, these are simply legacy property names.
 
-[TIP]
-====
-Want to start a PostgreSQL server on the side with Docker?
-
-[source,bash]
-----
-docker run --rm --name postgres-quarkus-hibernate -e POSTGRES_USER=quarkus_test \
-           -e POSTGRES_PASSWORD=quarkus_test -e POSTGRES_DB=quarkus_test \
-           -p 5432:5432 postgres:14.1
-----
-
-This will start a non-durable empty database: ideal for a quick experiment!
-====
-
 [[orm-and-reactive-extension-simultaneously]]
 === Hibernate ORM and Reactive extensions simultaneously