content: remove line that doesn't add and is confusing

Fixes golang/go#18926.

Change-Id: I03d5f7adcd2db0e862cffb5ff035d804b0d3b1db
Reviewed-on: https://go-review.googlesource.com/36220
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

content/moretypes.article

diff --git a/content/moretypes.article b/content/moretypes.article
index 64f7dc7..eb8eab4 100644
--- a/content/moretypes.article
+++ b/content/moretypes.article
@@ -33,8 +33,6 @@
 
 A `struct` is a collection of fields.
 
-(And a `type` declaration does what you'd expect.)
-
 .play moretypes/structs.go
 
 * Struct Fields