Fixes gcc '-Wunused-but-set-variable' warning:
drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c: In function _rtl92e_process_phyinfo:
drivers/staging/rtl8192e/rtl8192e/r8192E_dev.c:1689:15: warning: variable frag set but not used [-Wunused-but-set-variable]
It is introduced by commit 
3d461c912462 ("rtl8192e:
Split into two directories"), but never used, so remove it.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Link: https://lore.kernel.org/r/1574063901-87429-1-git-send-email-zhengbin13@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 
        static u32 last_beacon_adc_pwdb;
        struct rtllib_hdr_3addr *hdr;
        u16 sc;
-       unsigned int frag, seq;
+       unsigned int seq;
 
        hdr = (struct rtllib_hdr_3addr *)buffer;
        sc = le16_to_cpu(hdr->seq_ctl);
-       frag = WLAN_GET_SEQ_FRAG(sc);
        seq = WLAN_GET_SEQ_SEQ(sc);
        curr_st->Seq_Num = seq;
        if (!prev_st->bIsAMPDU)