Remove -sUSE_WEBGPU in favor of --use-port=emdawnwebgpu (#25398)

Fixes #24265

Author: kainino0x

ChangeLog.md

@@ -20,6 +20,8 @@ See docs/process.md for more on how version tagging works.
 
 4.0.18 (in development)
 -----------------------
+- `-sUSE_WEBGPU` was removed in favor of the external port Emdawnwebgpu which
+  are used via `--use-port=emdawnwebgpu`. See 4.0.10 release notes for details.
 
 4.0.17 - 10/17/25
 -----------------

embuilder.py

@@ -100,8 +100,6 @@
     'libunwind-legacyexcept',
     'libunwind-wasmexcept',
     'libnoexit',
-    'libwebgpu',
-    'libwebgpu_cpp',
     'bullet',
 ]
 

site/source/docs/tools_reference/settings_reference.rst

@@ -886,20 +886,6 @@ WebGL initialization afterwards will use this GL context to render.
 
 Default value: false
 
-.. _use_webgpu:
-
-USE_WEBGPU
-==========
-
-Enables the built-in implementation of ``<webgpu/webgpu.h>``.
-Deprecated: Please try migrating to ``--use-port=emdawnwebgpu``,
-which implements a newer, incompatible version of webgpu.h (see
-tools/ports/emdawnwebgpu.py for more info).
-
-.. note:: This setting is deprecated
-
-Default value: false
-
 .. _stb_image:
 
 STB_IMAGE