Remove unused browser helper code

[akurtakov]

Nowhere in the code checks for Konqueror or Gecko is done so we would better reduce the luggage.

[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:

ua/org.eclipse.ua.tests/META-INF/MANIFEST.MF
ua/org.eclipse.ua.tests/pom.xml

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 b99d81122b085dbd08e7db8d26213ea1c7bb8d47 Mon Sep 17 00:00:00 2001
From: Eclipse Platform Bot <platform-bot@eclipse.org>
Date: Wed, 16 Apr 2025 07:25:57 +0000
Subject: [PATCH] Version bump(s) for 4.36 stream


diff --git a/ua/org.eclipse.ua.tests/META-INF/MANIFEST.MF b/ua/org.eclipse.ua.tests/META-INF/MANIFEST.MF
index cbdb3b2f7c..a23f39fbd4 100644
--- a/ua/org.eclipse.ua.tests/META-INF/MANIFEST.MF
+++ b/ua/org.eclipse.ua.tests/META-INF/MANIFEST.MF
@@ -2,7 +2,7 @@ Manifest-Version: 1.0
 Bundle-ManifestVersion: 2
 Bundle-Name: User Assistance Test
 Bundle-SymbolicName: org.eclipse.ua.tests;singleton:=true
-Bundle-Version: 3.7.0.qualifier
+Bundle-Version: 3.7.100.qualifier
 Require-Bundle: org.eclipse.help.ui,
  org.eclipse.help.webapp,
  org.eclipse.test.performance,
diff --git a/ua/org.eclipse.ua.tests/pom.xml b/ua/org.eclipse.ua.tests/pom.xml
index 1b02eb4a04..3ceab2f6b6 100644
--- a/ua/org.eclipse.ua.tests/pom.xml
+++ b/ua/org.eclipse.ua.tests/pom.xml
@@ -19,7 +19,7 @@
   </parent>
   <groupId>org.eclipse.platform</groupId>
   <artifactId>org.eclipse.ua.tests</artifactId>
-  <version>3.7.0-SNAPSHOT</version>
+  <version>3.7.100-SNAPSHOT</version>
   <packaging>eclipse-test-plugin</packaging>
 
   <properties>
-- 
2.49.0

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