TUN-2243: Revert "STOR-519: Add db-connect, a SQL over HTTPS server"

This reverts commit 5da2109811.

vendor/github.com/kshvakov/clickhouse/lib/leakypool/leaky_pool.go

@@ -1,23 +0,0 @@
-package leakypool
-
-var pool chan []byte
-
-func InitBytePool(size int) {
-	pool = make(chan []byte, size)
-}
-
-func GetBytes(size, capacity int) (b []byte) {
-	select {
-	case b = <-pool:
-	default:
-		b = make([]byte, size, capacity)
-	}
-	return
-}
-
-func PutBytes(b []byte) {
-	select {
-	case pool <- b:
-	default:
-	}
-}