Makefile: Remove old include directories

lib20/include and lib/cryptolib no longer exist, so remove them from the
include path.

BRANCH=none
BUG=none
TEST=none

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: Ia5e2893a1aaca6655565315a0e06131906668392
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/4128690
Tested-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
Commit-Queue: Yu-Ping Wu <yupingso@chromium.org>
diff --git a/Makefile b/Makefile
index 295b680..8214d79 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-# Copyright 2013 The ChromiumOS Authors
+# Copyright 2013 The ChromiumOS Authors.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
@@ -319,10 +319,8 @@
 	-Ifirmware/include \
 	-Ifirmware/lib/include \
 	-Ifirmware/lib/cgptlib/include \
-	-Ifirmware/lib/cryptolib/include \
 	-Ifirmware/lib/tpm_lite/include \
-	-Ifirmware/2lib/include \
-	-Ifirmware/lib20/include
+	-Ifirmware/2lib/include
 
 # If we're not building for a specific target, just stub out things like the
 # TPM commands and various external functions that are provided by the BIOS.