e1000e: cleanup unused defines

/* Proprietary Latency Tolerance Reporting PCI Capability */

#define E1000_PCI_LTR_CAP_LPT		0xA8

/* OBFF Control & Threshold Defines */

#define E1000_SVCR_OFF_EN		0x00000001

#define E1000_SVCR_OFF_MASKINT		0x00001000

#define E1000_SVCR_OFF_TIMER_MASK	0xFFFF0000

#define E1000_SVCR_OFF_TIMER_SHIFT	16

#define E1000_SVT_OFF_HWM_MASK		0x0000001F

void e1000e_write_protect_nvm_ich8lan(struct e1000_hw *hw);

void e1000e_set_kmrn_lock_loss_workaround_ich8lan(struct e1000_hw *hw,

						  bool state);