Revert "423848: move RepositoryTextViewerConfiguration reference to new class"

This reverts commit f59937ca20402419dcd3caf4e52e58353fec1cac.
diff --git a/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/editors/RichTextEditor.java b/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/editors/RichTextEditor.java
index 51e4683..7ccdf3f 100644
--- a/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/editors/RichTextEditor.java
+++ b/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/editors/RichTextEditor.java
@@ -29,7 +29,6 @@
 import org.eclipse.jface.text.source.IAnnotationAccess;
 import org.eclipse.jface.text.source.ISourceViewer;
 import org.eclipse.jface.text.source.SourceViewer;
-import org.eclipse.jface.text.source.SourceViewerConfiguration;
 import org.eclipse.mylyn.commons.ui.FillWidthLayout;
 import org.eclipse.mylyn.commons.ui.compatibility.CommonThemes;
 import org.eclipse.mylyn.commons.workbench.editors.CommonTextSupport;
@@ -340,9 +339,10 @@
 	}
 
 	private void configureDefaultEditor(SourceViewer defaultEditor) {
-		SourceViewerConfiguration configuration = ViewerConfigurator.configure(repository, task,
-				isSpellCheckingEnabled() && !isReadOnly(), getMode());
-		defaultEditor.configure(configuration);
+		RepositoryTextViewerConfiguration viewerConfig = new RepositoryTextViewerConfiguration(repository, task,
+				isSpellCheckingEnabled() && !isReadOnly());
+		viewerConfig.setMode(getMode());
+		defaultEditor.configure(viewerConfig);
 	}
 
 	private BrowserPreviewViewer getBrowserViewer() {
diff --git a/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/editors/ViewerConfigurator.java b/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/editors/ViewerConfigurator.java
deleted file mode 100644
index cc4b2eb..0000000
--- a/org.eclipse.mylyn.tasks.ui/src/org/eclipse/mylyn/internal/tasks/ui/editors/ViewerConfigurator.java
+++ /dev/null
@@ -1,27 +0,0 @@
-/*******************************************************************************
- * Copyright (c) 2015 Tasktop Technologies and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * Contributors:
- *     Tasktop Technologies - initial API and implementation
- *******************************************************************************/
-
-package org.eclipse.mylyn.internal.tasks.ui.editors;
-
-import org.eclipse.jface.text.source.SourceViewerConfiguration;
-import org.eclipse.mylyn.internal.tasks.ui.editors.RepositoryTextViewerConfiguration.Mode;
-import org.eclipse.mylyn.tasks.core.ITask;
-import org.eclipse.mylyn.tasks.core.TaskRepository;
-
-class ViewerConfigurator {
-
-	static SourceViewerConfiguration configure(TaskRepository repository, ITask task, boolean spellCheck, Mode mode) {
-		RepositoryTextViewerConfiguration viewerConfig = new RepositoryTextViewerConfiguration(repository, task,
-				spellCheck);
-		viewerConfig.setMode(mode);
-		return viewerConfig;
-	}
-}