Remove dead code (cache.GetLast).

packetcache/packetcache.go

@@ -135,21 +135,6 @@ func (cache *Cache) Get(seqno uint16, result []byte) uint16 {
 	return 0
 }
 
-func (cache *Cache) GetLast(result []byte) uint16 {
-	cache.mu.Lock()
-	defer cache.mu.Unlock()
-
-	i := cache.tail - 1
-	if i >= uint16(len(cache.entries)) {
-		i = 0
-	}
-
-	return uint16(copy(
-		result[:cache.entries[i].length],
-		cache.entries[i].buf[:]),
-	)
-}
-
 func (cache *Cache) GetAt(seqno uint16, index uint16, result []byte) uint16 {
 	cache.mu.Lock()
 	defer cache.mu.Unlock()

packetcache/packetcache_test.go

@@ -33,11 +33,6 @@ func TestCache(t *testing.T) {
 	if !bytes.Equal(buf[:l], buf1) {
 		t.Errorf("Couldn't get 13 at %v", i1)
 	}
-	l = cache.GetLast(buf)
-	if !bytes.Equal(buf[:l], buf2) {
-		t.Errorf("Couldn't get last")
-	}
-
 	l = cache.Get(17, buf)
 	if !bytes.Equal(buf[:l], buf2) {
 		t.Errorf("Couldn't get 17")