Retire high contrast theme

[vogella]

The High Contrast theme does look very bad, it is better to retire it as this is clearly not maintained.

Fixes #3095

[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:

bundles/org.eclipse.ui.themes/META-INF/MANIFEST.MF

Warning

🚧 This PR cannot be modified by maintainers because edits are disabled or it is created from an organization repository. To obtain the required changes apply the git patch manually as an additional commit.

Git patch

From 422971b2daf1fde040f479343f1d3ba6c1e15e2d Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <[email protected]>
Date: Thu, 10 Jul 2025 14:07:13 +0000
Subject: [PATCH] Version bump(s) for 4.37 stream


diff --git a/bundles/org.eclipse.ui.themes/META-INF/MANIFEST.MF b/bundles/org.eclipse.ui.themes/META-INF/MANIFEST.MF
index 11d118fd4c..a1a0eafd86 100644
--- a/bundles/org.eclipse.ui.themes/META-INF/MANIFEST.MF
+++ b/bundles/org.eclipse.ui.themes/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: %Plugin.name
 Bundle-SymbolicName: org.eclipse.ui.themes;singleton:=true
-Bundle-Version: 1.2.2800.qualifier
+Bundle-Version: 1.2.2900.qualifier
 Bundle-Vendor: %Plugin.providerName
 Bundle-Localization: plugin
 Require-Bundle: org.eclipse.e4.ui.css.swt.theme
-- 
2.49.0

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

[github-actions]

Test Results

 2 775 files   - 3   2 775 suites   - 3   1h 35m 41s ⏱️ + 2m 5s
 7 927 tests  - 3   7 698 ✅  -  4  228 💤 ±0  1 ❌ +1 
23 336 runs   - 9  22 589 ✅  - 10  746 💤 ±0  1 ❌ +1 

For more details on these failures, see this check.

Results for commit c7bbf1a. ± Comparison against base commit f41ea06.

This pull request removes 3 tests.

org.eclipse.ui.tests.pluginchecks.PluginWalkerTest ‑ ensureExtensionPointClassesAreAccessable
org.eclipse.ui.tests.pluginchecks.PluginWalkerTest ‑ ensurePluginxmlContainsAtLeastOneEntry
org.eclipse.ui.tests.pluginchecks.PluginWalkerTest ‑ validateAccessToBundle