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This patch removes host_int_get_rx_power_level function definition and
declaration that is defined at host_interface.c and host_interface.h.
This function is defined but not used anywhere in this driver so just
remove it.
Signed-off-by: Chaehyun Lim <chaehyun.lim@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>