Remove o.e.jdt.ui dependency from navigator tests

Reduces cyclic dependencies between git repositories.

Author: akurtakov

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

@@ -14,7 +14,6 @@ Require-Bundle: org.eclipse.core.resources,
  org.eclipse.ui.navigator.resources,
  org.eclipse.ui.tests.harness,
  org.eclipse.ui.editors,
- org.eclipse.jdt.ui,
  org.eclipse.ui.genericeditor
 Bundle-Vendor: Eclipse.org
 Bundle-RequiredExecutionEnvironment: JavaSE-17