fpga: dfl: fme: remove set but not used variable 'priv'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/fpga/dfl-fme-pr.c: In function 'pr_mgmt_uinit':
drivers/fpga/dfl-fme-pr.c:447:18: warning:
 variable 'priv' set but not used [-Wunused-but-set-variable]
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Moritz Fischer <mdf@kernel.org>
Acked-by: Wu Hao <hao.wu@intel.com>
Acked-by: Alan Tull <atull@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/fpga/dfl-fme-pr.c

@@ -444,10 +444,8 @@ static void pr_mgmt_uinit(struct platform_device *pdev,
 			  struct dfl_feature *feature)
 {
 	struct dfl_feature_platform_data *pdata = dev_get_platdata(&pdev->dev);
-	struct dfl_fme *priv;
 
 	mutex_lock(&pdata->lock);
-	priv = dfl_fpga_pdata_get_private(pdata);
 
 	dfl_fme_destroy_regions(pdata);
 	dfl_fme_destroy_bridges(pdata);