SPARK-19342 remove the comment

titicaca · titicaca · commit 8379c3834fc2 · 2017-01-31T13:30:58.000+08:00
diff --git a/R/pkg/R/DataFrame.R b/R/pkg/R/DataFrame.R
@@ -1138,7 +1138,6 @@ setMethod("collect",
                   if (!is.null(PRIMITIVE_TYPES[[colType]]) && colType != "binary") {
                     vec <- do.call(c, col)
                     stopifnot(class(vec) != "list")
-                    # NOTE: If vec is an vector with only NAs, the type will be cast to PRIMITIVE_TYPE
                     class(vec) <-
                       if (colType == "timestamp")
                         c("POSIXct", "POSIXt")
