Remove unnecessary --pull parameter when running builder images

[yrodiere]

Follows up on #33749.

I forgot to remove this code that was just a remainder of an earlier approach which didn't go anywhere
(#33691 (comment)).

Keeping this code could in theory lead to extra pulls when using quarkus.native.build-image.pull='always' (the default) and the image gets updated right while we're building, but more importantly it could lead to extra, unecessary queries to quay.io, so let's avoid that.

[quarkus-bot]

Failing Jobs - Building f3f9719

Status	Name	Step	Failures	Logs	Raw logs
✔️	Devtools Tests - JDK 11
✖	Devtools Tests - JDK 11 Windows	Build	Failures	Logs	Raw logs
✔️	Devtools Tests - JDK 17
✔️	JVM Tests - JDK 11
✔️	JVM Tests - JDK 17
⌛	JVM Tests - JDK 17 Windows	Build	⚠️ Check →	Logs	Raw logs
✔️	JVM Tests - JDK 19
✖	Native Tests - Amazon	Build	Failures	Logs	Raw logs

Full information is available in the Build summary check run.

Failures

⚙️ Devtools Tests - JDK 11 Windows #

- Failing: integration-tests/devtools 

📦 integration-tests/devtools

✖ io.quarkus.devtools.codestarts.quarkus.RESTEasyReactiveCodestartsTest.buildAllProjects line 28 - More details - Source on GitHub

org.opentest4j.AssertionFailedError: 
[Run project return status is zero] 
expected: 0

📦 integration-tests/devtools/target/quarkus-codestart-test/resteasy-reactive-qute-resteasy-reactive-4bae67bb-34ae-47cb-b6d5-39b60343ad79/real-data/java

✖ ilove.quark.us.GreetingResourceTest.testHelloEndpoint line 15 - More details - Source on GitHub

java.net.SocketTimeoutException: Read timed out
	at java.base/java.net.SocketInputStream.socketRead0(Native Method)
	at java.base/java.net.SocketInputStream.socketRead(SocketInputStream.java:115)

---

⚙️ Native Tests - Amazon #

- Failing: integration-tests/amazon-lambda integration-tests/amazon-lambda-http 

📦 integration-tests/amazon-lambda

✖ io.quarkus.it.amazon.lambda.AmazonLambdaSimpleIT.testSimpleLambdaSuccess - More details - Source on GitHub

java.lang.RuntimeException: 
java.lang.RuntimeException: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
	[error]: Build step io.quarkus.amazon.lambda.deployment.DevServicesLambdaProcessor#startEventServer threw an exception: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.net.BindException: Address already in use

📦 integration-tests/amazon-lambda-http

✖ io.quarkus.it.amazon.lambda.AmazonLambdaSimpleIT.testJaxrsCognitoJWTSecurityContext - More details - Source on GitHub

java.lang.RuntimeException: 
java.lang.RuntimeException: io.quarkus.builder.BuildException: Build failure: Build failed due to errors
	[error]: Build step io.quarkus.amazon.lambda.deployment.DevServicesLambdaProcessor#startEventServer threw an exception: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.net.BindException: Address already in use

[yrodiere]

The test failures look unrelated:

2023-06-01T10:36:31.3033991Z java.net.SocketTimeoutException: Read timed out

And

2023-06-01T11:00:42.8734323Z [error]: Build step io.quarkus.amazon.lambda.deployment.DevServicesLambdaProcessor#startEventServer threw an exception: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.net.BindException: Address already in use

Merging. Thanks for the review(s)!