Remove unused utility methods in Ant UI tests

[HeikoKlare]

No description provided.

[eclipse-platform-bot]

This pull request changes some projects for the first time in this development cycle.
Therefore the following files need a version increment:

ant/org.eclipse.ant.tests.ui/META-INF/MANIFEST.MF

An additional commit containing all the necessary changes was pushed to the top of this PR's branch. To obtain these changes (for example if you want to push more changes) either fetch from your fork or apply the git patch.

Git patch

From 148dc77b158e7a0fdf2ae2785598b1c400b7e87c Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <platform-bot@eclipse.org>
Date: Tue, 30 Dec 2025 19:12:57 +0000
Subject: [PATCH] Version bump(s) for 4.39 stream


diff --git a/ant/org.eclipse.ant.tests.ui/META-INF/MANIFEST.MF b/ant/org.eclipse.ant.tests.ui/META-INF/MANIFEST.MF
index 3b147d54a5..96f4d2511e 100644
--- a/ant/org.eclipse.ant.tests.ui/META-INF/MANIFEST.MF
+++ b/ant/org.eclipse.ant.tests.ui/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %pluginName
 Bundle-SymbolicName: org.eclipse.ant.tests.ui; singleton:=true
-Bundle-Version: 3.12.300.qualifier
+Bundle-Version: 3.12.400.qualifier
 Bundle-ClassPath: anttestsui.jar
 Bundle-Vendor: %providerName
 Bundle-Localization: plugin
-- 
2.52.0

Further information are available in Common Build Issues - Missing version increments.

[github-actions]

Test Results

 1 953 files  ±0   1 953 suites  ±0   1h 26m 47s ⏱️ + 3m 50s
 4 745 tests ±0   4 721 ✅ ±0   24 💤 ±0  0 ❌ ±0 
14 235 runs  ±0  14 053 ✅ ±0  182 💤 ±0  0 ❌ ±0 

Results for commit a2b42dd. ± Comparison against base commit ea48793.