Revert "Add nexthop cache fresh check method."
Revert "Add nexthop cache fresh check method."

This reverts commit c3a232a41a0c107c8a18d631a73b71ede674f218.

mwutzke/faucet,REANNZ/faucet,shivarammysore/faucet,byllyfish/faucet,faucetsdn/faucet,mwutzke/faucet,trungdtbk/faucet,Bairdo/faucet,gizmoguy/faucet,byllyfish/faucet,Bairdo/faucet,anarkiwi/faucet,faucetsdn/faucet,gizmoguy/faucet,wackerly/faucet,isomer/faucet,trungdtbk/faucet,trentindav/faucet,isomer/faucet,REANNZ/faucet,wackerly/faucet,trentindav/faucet,shivarammysore/faucet,anarkiwi/faucet