gpioutil: Remove python based gpioutil tool

This tool has been superceded by libgpiod. The OpenBMC distribution is
moving towards having python be optional in its distribution so python
based tools like this can not be automatically packaged into the
filesystem.

Tested:
Verified gpioutil was no longer in rootfs after building witherspoon

Change-Id: I143efee90f2e624bb05e97d5d274e5a3f5c0637e
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend b/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend
index 955eb24..7874704 100644
--- a/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend
+++ b/recipes-phosphor/packagegroups/packagegroup-obmc-apps.bbappend
@@ -1,5 +1,3 @@
-RDEPENDS_${PN}-extrasdevtools_append_df-openpower = " obmc-pydevtools"
-
 # Add the deprecated /org/openbmc inventory namespace providing
 # obmc-mgr-inventory application to the inventory packagegroup
 # until all applications have been updated to use the new,