Remove more unused docker images to free up space for Early Access JDK Build

[famod]

It has been failing in the last days with:

2022-01-21T04:24:23.7959242Z [ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 7.772 s <<< FAILURE! - in com.example.reactive.ReactiveServiceTest
2022-01-21T04:24:23.7963200Z [ERROR] com.example.reactive.ReactiveServiceTest.shouldWatchAndAddMultipleTimes  Time elapsed: 0.008 s  <<< ERROR!
2022-01-21T04:24:23.7963806Z java.lang.RuntimeException: 
2022-01-21T04:24:23.7964410Z java.lang.RuntimeException: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
2022-01-21T04:24:23.7965508Z 	[error]: Build step io.quarkus.datasource.deployment.devservices.DevServicesDatasourceProcessor#launchDatabases threw an exception: java.lang.RuntimeException: java.lang.IllegalStateException: Check failed: Docker environment should have more than 2GB free disk space

[gsmet]

Hmmm, but why don't we have any issue with the normal build?

[famod]

The EA job is running everything in one job, except native stuff. And it seems to be on the very brink:

• 265 failed
• 266 ok
• 267 failed

https://github.com/quarkusio/quarkus/actions/workflows/jdk-early-access-build.yml