fs: befs: remove useless pr_err in befs_init_inodecache()

Remove pr_err since kmem_cache_create log error and dump stack.

Link: http://lkml.kernel.org/r/e6d03cbc9542495dc6174b59e32fcd41c1393cfc.1464226521.git.salah.triki@acm.org


Signed-off-by: Salah Triki <salah.triki@acm.org>