LU-8820 hsm: skip LL_IOC_HSM_COPY_START for HSM removes

LU-8820 hsm: skip LL_IOC_HSM_COPY_START for HSM removes

In llapi_hsm_action_begin(), if the action is a remove then skip
calling the LL_IOC_HSM_COPY_START ioctl.

Signed-off-by: John L. Hammond <john.hammond@intel.com>
Change-Id: Id84f1877a4f05c91e063797b51bd2046f2283ec4
Reviewed-on: https://review.whamcloud.com/23700
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Faccini Bruno <bruno.faccini@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>