Unpool handshake

Anyway, we are going to use stack here, no need for connection pooling.
Even arrays are allocaed on a stack because we do not use slices here
but real ones.

mtglib/internal/obfuscated2/pools.go

@@ -6,18 +6,11 @@ import (
 	"sync"
 )
 
-var (
-	sha256HasherPool = sync.Pool{
-		New: func() interface{} {
-			return sha256.New()
-		},
-	}
-	handshakeFramePool = sync.Pool{
-		New: func() interface{} {
-			return &handshakeFrame{}
-		},
-	}
-)
+var sha256HasherPool = sync.Pool{
+	New: func() interface{} {
+		return sha256.New()
+	},
+}
 
 func acquireSha256Hasher() hash.Hash {
 	return sha256HasherPool.Get().(hash.Hash)
@@ -27,11 +20,3 @@ func releaseSha256Hasher(h hash.Hash) {
 	h.Reset()
 	sha256HasherPool.Put(h)
 }
-
-func acquireHandshakeFrame() *handshakeFrame {
-	return handshakeFramePool.Get().(*handshakeFrame)
-}
-
-func releaseHandshakeFrame(h *handshakeFrame) {
-	handshakeFramePool.Put(h)
-}