staging: rtlwifi: remove redundant initialization of 'cfg_cmd'

The initialization of cfg_cmd is redundant as the value is never read
and it is being re-assigned to cfg_cmd = pwrcfgcmd[ary_idx] inside a
loop, hence it can be removed.

Cleans up clang warning:
drivers/staging/rtlwifi/core.c:1819:22: warning: Value stored to
'cfg_cmd' during its initialization is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rtlwifi/core.c

@@ -1816,7 +1816,7 @@ bool rtl_hal_pwrseqcmdparsing(struct rtl_priv *rtlpriv, u8 cut_version,
 			      u8 faversion, u8 interface_type,
 			      struct wlan_pwr_cfg pwrcfgcmd[])
 {
-	struct wlan_pwr_cfg cfg_cmd = {0};
+	struct wlan_pwr_cfg cfg_cmd;
 	bool polling_bit = false;
 	u32 ary_idx = 0;
 	u8 value = 0;