trace-events: drop orphan usb_mtp_data_out

This trace event was added in commit
840a178c ("usb: mtp filesharing") but
never used.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: NMarkus Armbruster <armbru@redhat.com>
Message-id: 1411394595-15300-3-git-send-email-stefanha@redhat.com

trace-events

@@ -502,7 +502,6 @@ usb_mtp_command(int dev, uint16_t code, uint32_t trans, uint32_t arg0, uint32_t
 usb_mtp_success(int dev, uint32_t trans, uint32_t arg0, uint32_t arg1) "dev %d, trans 0x%x, args 0x%x, 0x%x"
 usb_mtp_error(int dev, uint16_t code, uint32_t trans, uint32_t arg0, uint32_t arg1) "dev %d, code 0x%x, trans 0x%x, args 0x%x, 0x%x"
 usb_mtp_data_in(int dev, uint32_t trans, uint32_t len) "dev %d, trans 0x%x, len %d"
-usb_mtp_data_out(int dev, uint32_t trans, uint32_t len) "dev %d, trans 0x%x, len %d"
 usb_mtp_xfer(int dev, uint32_t ep, uint32_t dlen, uint32_t plen) "dev %d, ep %d, %d/%d"
 usb_mtp_nak(int dev, uint32_t ep) "dev %d, ep %d"
 usb_mtp_stall(int dev, const char *reason) "dev %d, reason: %s"