Do not display maven version

Remove obsolete hotfix

If maven is not downloaded for maven-wrapper,
`./mvnw` downloads it with `org.apache.maven.wrapper.Installer`.
`org.apache.maven.wrapper.Installer` in version `0.1.2-SNAPSHOT` which
we had some day before (upgraded in
3e35fc4) logs to the standard output.
The newest version of maven-wrapper.jar is `3.1.0` and it logs to log
https://mvnrepository.com/artifact/org.apache.maven.wrapper/maven-wrapper

To overcome this issue `./mvnw -v` construction was used to
skip output before any actual `./mvnw` invocation which returned
valuable text output.

plugin/trino-hive-hadoop2/conf/hive-tests-defaults.sh

@@ -1,8 +1,5 @@
 #!/usr/bin/env bash
 
-# Download maven wrapper if it is not present so next command can have clean output
-./mvnw --version >/dev/null
-
 DEFAULT_DOCKER_VERSION=$(./mvnw help:evaluate -Dexpression=dep.docker.images.version -q -DforceStdout)
 
 if [ -z "$DEFAULT_DOCKER_VERSION" ];