chore(dot/epoch) better branching

Co-authored-by: JimboJ <40345116+jimjbrettj@users.noreply.github.com>

dot/state/epoch.go

@@ -277,7 +277,7 @@ func (s *EpochState) GetEpochForBlock(header *types.Header) (uint64, error) {
 	//  actually the epoch number for block number #1 is epoch 0,
 	// epochs start from 0 and are incremented (almost, given that epochs might be skipped)
 	// sequentially 0...1...2, so the block number #1 belongs to epoch 0
-	if header.Number == 0 || header.Number == 1 {
+	if header.Number <= 1 {
 		return 0, nil
 	}