cleanup eventbus changes from merge

internal/consensus/byzantine_test.go

@@ -176,7 +176,6 @@ func TestByzantinePrevoteEquivocation(t *testing.T) {
 		require.NotNil(t, lazyNodeState.privValidator)
 
 		var commit *types.Commit
-		var votes []*types.Vote
 		switch {
 		case lazyNodeState.Height == lazyNodeState.state.InitialHeight:
 			// We're creating a proposal for the first block.
@@ -185,7 +184,6 @@ func TestByzantinePrevoteEquivocation(t *testing.T) {
 		case lazyNodeState.LastCommit.HasTwoThirdsMajority():
 			// Make the commit from LastCommit
 			commit = lazyNodeState.LastCommit.MakeCommit()
-			votes = lazyNodeState.LastCommit.GetVotes()
 		default: // This shouldn't happen.
 			lazyNodeState.logger.Error("enterPropose: Cannot propose anything: No commit for the previous block")
 			return