LU-8573 lnet: Revert LU-7650 patches

LU-8573 lnet: Revert LU-7650 patches

These patches are causing LU-8573

Revert "LU-7650 o2iblnd: Put back work queue check previously removed"

This reverts commit bde1da1ec098450f40887587b0a46c9eb86a4f6c.

Revert "LU-7650 o2iblnd: handle mixed page size configurations."

This reverts commit 399a5ac1fc73343c69e0fd737032adf5329df1b2.

Change-Id: I4517fab64ac5b1023e615874f58b1bb4902e8c43
Signed-off-by: Alex Zhuravlev <alexey.zhuravlev@intel.com>
Reviewed-on: http://review.whamcloud.com/23439
Tested-by: Jenkins
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Tested-by: Oleg Drokin <oleg.drokin@intel.com>