remoteproc: fix an typo in fw_elf_get_class code comments

Drop 'and' which looks like unnecessary.

Fixes: 73516a33 ("remoteproc: Add elf helpers to access elf64 and elf32 fields")
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Link: https://lore.kernel.org/r/20210706142156.952794-1-aisheng.dong@nxp.com


Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>