Remove support for the @stride attribute

We still use the StrideAttribute AST node in the SPIR-V reader for
strided arrays and matrices, which are then removed by transforms.

The WGSL parser no longer has to handle attributes on types.

Bug: tint:1381
Change-Id: Ifa39575ce207d3fdfcbef7125fe6a3686fad5f20
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/83963
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
diff --git a/docs/tint/origin-trial-changes.md b/docs/tint/origin-trial-changes.md
index 2371a83..ff3c4f6 100644
--- a/docs/tint/origin-trial-changes.md
+++ b/docs/tint/origin-trial-changes.md
@@ -5,6 +5,7 @@
 ### Breaking changes
 
 * The `@block` attribute has been removed. [tint:1324](crbug.com/tint/1324)
+* The `@stride` attribute has been removed. [tint:1381](crbug.com/tint/1381)
 * Attributes using `[[attribute]]` syntax are no longer supported. [tint:1382](crbug.com/tint/1382)
 
 ## Changes for M101