[dpdk-dev] [RFC] remove unused functions

[Zhang, Tianfei]

>  drivers/raw/ifpga/base/opae_eth_group.c       |   25 -
>  drivers/raw/ifpga/base/opae_eth_group.h       |    1 -
>  drivers/raw/ifpga/base/opae_hw_api.c          |  212 --
>  drivers/raw/ifpga/base/opae_hw_api.h          |   36 -
>  drivers/raw/ifpga/base/opae_i2c.c             |   12 -
>  drivers/raw/ifpga/base/opae_i2c.h             |    4 -
>  drivers/raw/ifpga/base/opae_ifpga_hw_api.c    |   99 -
>  drivers/raw/ifpga/base/opae_ifpga_hw_api.h    |   15 -

The ifpga base code is want to provide fully functionality low level hardware support for Intel FPGA card like N3000, even though some APIs are not used by DPDK framework now，but it will useful for end-users or other customers developing their own productions , my opinion is keeping those APIs of ifpga base code in DPDK.