Build: Remove padding from java version in build info (#36088)

This commit removes padding from the java version in the output of
compiler/runtime/gradle java versions. This value is only ever 1 or 2
digits, and the later information (hotspot/jvm vendor info) is separated
by the java home path from the other versions, so there isn't a visual
reason for needing exact vertical alignment.

buildSrc/src/main/groovy/org/elasticsearch/gradle/BuildPlugin.groovy

@@ -155,14 +155,14 @@ class BuildPlugin implements Plugin<Project> {
             println "  Gradle Version        : ${project.gradle.gradleVersion}"
             println "  OS Info               : ${System.getProperty('os.name')} ${System.getProperty('os.version')} (${System.getProperty('os.arch')})"
             if (gradleJavaVersionDetails != compilerJavaVersionDetails || gradleJavaVersionDetails != runtimeJavaVersionDetails) {
-                println "  Compiler JDK Version  : ${getPaddedMajorVersion(compilerJavaVersionEnum)} (${compilerJavaVersionDetails})"
+                println "  Compiler JDK Version  : ${compilerJavaVersionEnum} (${compilerJavaVersionDetails})"
                 println "  Compiler java.home    : ${compilerJavaHome}"
-                println "  Runtime JDK Version   : ${getPaddedMajorVersion(runtimeJavaVersionEnum)} (${runtimeJavaVersionDetails})"
+                println "  Runtime JDK Version   : ${runtimeJavaVersionEnum} (${runtimeJavaVersionDetails})"
                 println "  Runtime java.home     : ${runtimeJavaHome}"
-                println "  Gradle JDK Version    : ${getPaddedMajorVersion(JavaVersion.toVersion(gradleJavaVersion))} (${gradleJavaVersionDetails})"
+                println "  Gradle JDK Version    : ${JavaVersion.toVersion(gradleJavaVersion)} (${gradleJavaVersionDetails})"
                 println "  Gradle java.home      : ${gradleJavaHome}"
             } else {
-                println "  JDK Version           : ${getPaddedMajorVersion(JavaVersion.toVersion(gradleJavaVersion))} (${gradleJavaVersionDetails})"
+                println "  JDK Version           : ${JavaVersion.toVersion(gradleJavaVersion)} (${gradleJavaVersionDetails})"
                 println "  JAVA_HOME             : ${gradleJavaHome}"
             }
             println "  Random Testing Seed   : ${project.testSeed}"
@@ -232,10 +232,6 @@ class BuildPlugin implements Plugin<Project> {
         project.ext.java9Home = project.rootProject.ext.java9Home
     }
 
-    private static String getPaddedMajorVersion(JavaVersion compilerJavaVersionEnum) {
-        compilerJavaVersionEnum.getMajorVersion().toString().padLeft(2)
-    }
-
     private static String findCompilerJavaHome() {
         final String compilerJavaHome = System.getenv('JAVA_HOME')
         final String compilerJavaProperty = System.getProperty('compiler.java')