UPSTREAM: ath10k: wmi: remove redundant integer fc

Variable fc is being assigned but never used, so remove it. Cleans
up the clang warning:

warning: Value stored to 'fc' is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Git-commit: a0709dfd7ff8cfd60ae7e1f9e81efbcedc936b05
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git


Change-Id: I7ed9f7bd667ac2cca675e75789597dc70913a390
Signed-off-by: Dundi Raviteja <dundi@codeaurora.org>