CL 14624 introduced this label. At that time,
the switch-case had a break to label statement which made this necessary.
But now, the code no longer has a break statement and it directly returns.

Hence, it is no longer necessary to have a label.

Change-Id: Idde0fcc4d2db2d76424679f5acfe33ab8573bce4
Reviewed-on: https://go-review.googlesource.com/96935Reviewed-by: Joe Tsai <thebrokentoaster@gmail.com>