The default of EXTRA_OEMAKE is already empty since commit:
OE-Core rev: aeb653861a0ec39ea7a014c0622980edcbf653fa
bitbake.conf: Remove unhelpful default value for EXTRA_OEMAKE
(From OE-Core rev: f37523e2d9ddf523da12aa962cf8fbe21a355d67)
Signed-off-by: Stefan Müller-Klieser <s.mueller-klieser@phytec.de>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>