diff --git a/layout/config/config.mak b/layout/config/config.mak
deleted file mode 100644
index 83cc5c7e99c1..000000000000
--- a/layout/config/config.mak
+++ /dev/null
@@ -1,39 +0,0 @@
-#!nmake
-#
-# The contents of this file are subject to the Netscape Public License
-# Version 1.0 (the "NPL"); you may not use this file except in
-# compliance with the NPL.  You may obtain a copy of the NPL at
-# http://www.mozilla.org/NPL/
-#
-# Software distributed under the NPL is distributed on an "AS IS" basis,
-# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
-# for the specific language governing rights and limitations under the
-# NPL.
-#
-# The Initial Developer of this code under the NPL is Netscape
-# Communications Corporation.  Portions created by Netscape are
-# Copyright (C) 1998 Netscape Communications Corporation.  All Rights
-# Reserved.
-
-IGNORE_MANIFEST=1
-
-# First include standard config file
-include <$(DEPTH)\config\config.mak>
-
-# Replace optimizer and pdb related flags to use our own conventions
-!ifdef LIBRARY_NAME
-!ifdef MOZ_DEBUG
-OPTIMIZER=-Zi -DDEBUG -UNDEBUG -D_DEBUG
-PDBFILE=$(LIBRARY_NAME)
-OS_LFLAGS=/DEBUG /DEBUGTYPE:CV /PDB:$(PDBFILE)
-!endif
-!endif
-
-# Replace optimizer and pdb related flags to use our own conventions
-!ifdef DLLNAME
-!ifdef MOZ_DEBUG
-OPTIMIZER=-Zi -DDEBUG -UNDEBUG -D_DEBUG
-PDBFILE=$(DLLNAME)
-OS_LFLAGS=/DEBUG /DEBUGTYPE:CV /PDB:$(PDBFILE)
-!endif
-!endif
diff --git a/layout/config/rules.mak b/layout/config/rules.mak
deleted file mode 100644
index 1fb54470b8da..000000000000
--- a/layout/config/rules.mak
+++ /dev/null
@@ -1,19 +0,0 @@
-#!nmake
-#
-# The contents of this file are subject to the Netscape Public License
-# Version 1.0 (the "NPL"); you may not use this file except in
-# compliance with the NPL.  You may obtain a copy of the NPL at
-# http://www.mozilla.org/NPL/
-#
-# Software distributed under the NPL is distributed on an "AS IS" basis,
-# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
-# for the specific language governing rights and limitations under the
-# NPL.
-#
-# The Initial Developer of this code under the NPL is Netscape
-# Communications Corporation.  Portions created by Netscape are
-# Copyright (C) 1998 Netscape Communications Corporation.  All Rights
-# Reserved.
-
-include <$(DEPTH)\layout\config\config.mak>
-include <$(DEPTH)\config\rules.mak>