Remove final unused import from test file

Author: NikkiAung

tests/org.eclipse.search.tests/src/org/eclipse/search/tests/GlobalNextPrevSearchEntryHandlerTest.java

@@ -14,7 +14,6 @@
 package org.eclipse.search.tests;
 
 import static org.junit.jupiter.api.Assertions.assertNotNull;
-import static org.junit.jupiter.api.Assertions.assertNull;
 
 import org.eclipse.core.runtime.CoreException;
 import org.eclipse.search2.internal.ui.basic.views.GlobalNextPrevSearchEntryHandler;