staging: r8188eu: remove rtw_use_tkipkey_handler()

Function rtw_use_tkipkey_handler() is unused, remove it.
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210903190444.15585-4-straube.linux@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/core/rtw_security.c

@@ -1568,22 +1568,3 @@ do {									\
 	d##2 = TE0(s##2) ^ TE1(s##3) ^ TE2(s##0) ^ TE3(s##1) ^ rk[4 * i + 2]; \
 	d##3 = TE0(s##3) ^ TE1(s##0) ^ TE2(s##1) ^ TE3(s##2) ^ rk[4 * i + 3]; \
 } while (0);
-
-/**
- * omac1_aes_128 - One-Key CBC MAC (OMAC1) hash with AES-128 (aka AES-CMAC)
- * @key: 128-bit key for the hash operation
- * @data: Data buffer for which a MAC is determined
- * @data_len: Length of data buffer in bytes
- * @mac: Buffer for MAC (128 bits, i.e., 16 bytes)
- * Returns: 0 on success, -1 on failure
- *
- * This is a mode for using block cipher (AES in this case) for authentication.
- * OMAC1 was standardized with the name CMAC by NIST in a Special Publication
- * (SP) 800-38B.
- */
-void rtw_use_tkipkey_handler(void *FunctionContext)
-{
-	struct adapter *padapter = (struct adapter *)FunctionContext;
-
-	padapter->securitypriv.busetkipkey = true;
-}

drivers/staging/r8188eu/include/rtw_security.h

@@ -341,6 +341,5 @@ void rtw_wep_encrypt(struct adapter *padapter, struct xmit_frame *pxmitframe);
 u32 rtw_aes_decrypt(struct adapter *padapter, struct recv_frame *precvframe);
 u32 rtw_tkip_decrypt(struct adapter *padapter, struct recv_frame *precvframe);
 void rtw_wep_decrypt(struct adapter *padapter, struct recv_frame *precvframe);
-void rtw_use_tkipkey_handler(void *FunctionContext);
 
 #endif	/* __RTL871X_SECURITY_H_ */