diff --git a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/R/dataframe_overrides.R b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/R/dataframe_overrides.R
deleted file mode 100644
index 2d61513b5326ac326cbce80dd9e4cfdd02fad0f9..0000000000000000000000000000000000000000
--- a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/R/dataframe_overrides.R
+++ /dev/null
@@ -1,30 +0,0 @@
-#  File src/library/base/R/dataframe.R
-#  Part of the R package, http://www.R-project.org
-#
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; either version 2 of the License, or
-#  (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  A copy of the GNU General Public License is available at
-#  http://www.r-project.org/Licenses/
-
-# Statlib code by John Chambers, Bell Labs, 1994
-# Changes Copyright (C) 1998-2014 The R Core Team
-
-Summary.data.frame <- function(..., na.rm=FALSE)
-{
-    args <- list(...)
-    args <- lapply(args, function(x) {
-        x <- as.matrix(x)
-        if(!is.numeric(x) && !is.complex(x))
-            stop("only defined on a data frame with all numeric variables")
-        x
-    })
-    do.call(.Generic, c(args, na.rm=na.rm))
-}
diff --git a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/utils/R/packages_overrides.R b/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/utils/R/packages_overrides.R
deleted file mode 100644
index 0dc6f9fe27335e7b7bd9a53279e914047ccbc833..0000000000000000000000000000000000000000
--- a/com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/utils/R/packages_overrides.R
+++ /dev/null
@@ -1,56 +0,0 @@
-#  File src/library/utils/R/packages.R
-#  Part of the R package, http://www.R-project.org
-#
-#  Copyright (C) 1995-2014 The R Core Team
-#
-#  This program is free software; you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation; either version 2 of the License, or
-#  (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-#  GNU General Public License for more details.
-#
-#  A copy of the GNU General Public License is available at
-#  http://www.r-project.org/Licenses/
-
-# An override that works around the problems with numeric version generic ops
-# We have to eval this re-definition in the utils namespace environmment as it is a private function
-# stored in a local map
-
-eval(expression(
-available_packages_filters_db$R_version <-
-		function(db)
-{
-	## Ignore packages which don't fit our version of R.
-	depends <- db[, "Depends"]
-	depends[is.na(depends)] <- ""
-	## Collect the (versioned) R depends entries.
-	x <- lapply(strsplit(sub("^[[:space:]]*", "", depends),
-					"[[:space:]]*,[[:space:]]*"),
-			function(s) s[grepl("^R[[:space:]]*\\(", s)])
-	lens <- sapply(x, length)
-	pos <- which(lens > 0L)
-	if(!length(pos)) return(db)
-	lens <- lens[pos]
-	## Unlist.
-	x <- unlist(x)
-	pat <- "^R[[:space:]]*\\(([[<>=!]+)[[:space:]]+(.*)\\)[[:space:]]*"
-	## Extract ops.
-	ops <- sub(pat, "\\1", x)
-	## Split target versions accordings to ops.
-	v_t <- split(sub(pat, "\\2", x), ops)
-	## Current R version.
-#	v_c <- getRversion()
-	v_c <- as.character(getRversion())
-	## Compare current to target grouped by op.
-	res <- logical(length(x))
-	for(op in names(v_t))
-		res[ops == op] <- do.call(op, list(v_c, v_t[[op]]))
-	## And assemble test results according to the rows of db.
-	ind <- rep.int(TRUE, NROW(db))
-	ind[pos] <- sapply(split(res, rep.int(seq_along(lens), lens)), all)
-	db[ind, , drop = FALSE]
-}), asNamespace("utils"))