char: misc: remove redundant ifdef

The check for CONFIG_PROC_FS is not required as the check is being done
in proc_fs.h and incase CONFIG_PROC_FS is not defined then proc_create()
is defined as NULL.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>