Remove unneeded and incorrect comments and commented-out code

Wrapping something as a Vert.x `Buffer` by implementing the `Buffer` interface is not viable because `BufferImpl` contains casts from a `Buffer` to a `BufferImpl`.

frameworks/Kotlin/vertx-web-kotlinx/src/main/kotlin/Okio.kt

@@ -7,23 +7,10 @@ import okio.Timeout
 import io.vertx.core.buffer.Buffer as VertxBuffer
 import okio.Buffer as OkioBuffer
 
-// too complicated to implement
-// Also there are casts from `Buffer` to `BufferImpl` in Vert.x
-/*
-@JvmInline
-value class OkioBufferVertxBuffer(val okioBuffer: OkioBuffer) : VertxBuffer {
-}
-
-fun OkioBuffer.toVertxBuffer(): VertxBuffer =
-    OkioBufferVertxBuffer(this)
-*/
-
-
 @JvmInline
 value class VertxBufferWriteStreamSink(val writeStream: WriteStream<VertxBuffer>) : Sink {
     override fun write(source: OkioBuffer, byteCount: Long) {
         runBlocking {
-            // `source` is temporarily converted to a byte array because wrapping it as a Vert.x `Buffer` is too complicated to implement.
             writeStream.write(VertxBuffer.buffer(source.readByteArray(byteCount))).coAwait()
         }
     }
@@ -47,7 +34,6 @@ fun WriteStream<VertxBuffer>.toSink(): Sink =
 @JvmInline
 value class VertxBufferSink(val vertxBuffer: VertxBuffer) : Sink {
     override fun write(source: Buffer, byteCount: Long) {
-        // same problem as above
         vertxBuffer.appendBytes(source.readByteArray(byteCount))
     }