sqlitesearch: escapeftsArgument: Fix wrong escaping of phrase queries

shared/sqlitesearch.cpp

@@ -86,7 +86,6 @@ QString SqliteSearch::escapeFtsArgument(QString ftsArg)
 		}
 		else
 		{
-			value = "\"\"" + value + "\"\"";
 			result += "\"" + value + "\" ";
 		}
 	}