staging: r8188eu: remove eeprom function prototypes

Remove prototypes for non-existing eeprom functions. It seems that r8188eu
has efuses but no eeprom.
Signed-off-by: Martin Kaiser <martin@kaiser.cx>
Link: https://lore.kernel.org/r/20220709171000.180481-4-martin@kaiser.cxSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/r8188eu/include/rtw_eeprom.h

@@ -15,10 +15,4 @@ struct eeprom_priv {
 	u8		efuse_eeprom_data[HWSET_MAX_SIZE_512] __aligned(4);
 };
 
-void eeprom_write16(struct adapter *padapter, u16 reg, u16 data);
-u16 eeprom_read16(struct adapter *padapter, u16 reg);
-void read_eeprom_content(struct adapter *padapter);
-void eeprom_read_sz(struct adapter *adapt, u16 reg, u8 *data, u32 sz);
-void read_eeprom_content_by_attrib(struct adapter *padapter);
-
 #endif  /* __RTL871X_EEPROM_H__ */