LU-11068 build: remove invalid kernel srpm location

LU-11068 build: remove invalid kernel srpm location

The location has never been existed

Lustre-change: https://review.whamcloud.com/32606
Lustre-commit: 8d150d1ca0db1e584511b795c03b5da7a2787b4d

Change-Id: I8958bbdb5c61284c55d6cc337ac92832f91ee08b
Signed-off-by: Minh Diep <minh.diep@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Nathaniel Clark <nclark@whamcloud.com>
Reviewed-on: https://review.whamcloud.com/33314
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Tested-by: Jenkins
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>