Fix loss of sense examples importing from The Combine

LIFT exports from The Combine don't ever have examples in their senses, so the import into FLEx shouldn't remove existing examples.

Src/LexText/LexTextControls/LiftMerger.cs

@@ -4063,7 +4063,7 @@ private void MergeSenseExamples(ILexSense ls, CmLiftSense sense)
 					setUsed.Add(les.Hvo);
 			}
 			// If we're keeping only the imported data, delete any unused example.
-			if (m_msImport == MergeStyle.MsKeepOnlyNew || m_msImport == MergeStyle.MsTheCombine)
+			if (m_msImport == MergeStyle.MsKeepOnlyNew)
 			{
 				foreach (int hvo in ls.ExamplesOS.ToHvoArray())
 				{