ALSA: usb-audio: Remove async workaround for Scarlett 2nd gen

Frame size computation has been fixed and the workaround is no longer
needed.
Signed-off-by: Alexander Tsoy <alexander@tsoy.me>
Link: https://lore.kernel.org/r/20200424022449.14972-2-alexander@tsoy.meSigned-off-by: Takashi Iwai <tiwai@suse.de>

sound/usb/quirks.c

@@ -1806,20 +1806,6 @@ void snd_usb_audioformat_attributes_quirk(struct snd_usb_audio *chip,
 		 */
 		fp->attributes &= ~UAC_EP_CS_ATTR_FILL_MAX;
 		break;
-	case USB_ID(0x1235, 0x8200):  /* Focusrite Scarlett 2i4 2nd gen */
-	case USB_ID(0x1235, 0x8202):  /* Focusrite Scarlett 2i2 2nd gen */
-	case USB_ID(0x1235, 0x8205):  /* Focusrite Scarlett Solo 2nd gen */
-		/*
-		 * Reports that playback should use Synch: Synchronous
-		 * while still providing a feedback endpoint.
-		 * Synchronous causes snapping on some sample rates.
-		 * Force it to use Synch: Asynchronous.
-		 */
-		if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
-			fp->ep_attr &= ~USB_ENDPOINT_SYNCTYPE;
-			fp->ep_attr |= USB_ENDPOINT_SYNC_ASYNC;
-		}
-		break;
 	}
 }