chore: retire cce-layout-interface from the workspace

Page and document design moves to cce-designer's 2D page context; the
crate's repository is archived on GitHub.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

 Cargo.lock | 17 -----------------
 Cargo.toml |  1 -
 2 files changed, 18 deletions(-)

diff --git a/Cargo.lock b/Cargo.lock
index b2aea89..06052ae 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1260,23 +1260,6 @@ dependencies = [
  "wayland-client",
 ]
 
-[[package]]
-name = "cce-layout-interface"
-version = "0.1.0"
-dependencies = [
- "calloop",
- "calloop-wayland-source",
- "cce-ui",
- "env_logger",
- "log",
- "serde",
- "serde_json",
- "smithay-client-toolkit",
- "tokio",
- "wayland-client",
- "xkeysym",
-]
-
 [[package]]
 name = "cce-list"
 version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
index 09c10aa..5185a14 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -2,7 +2,6 @@
 resolver = "2"
 members = [
     "cce-ui",
-    "cce-layout-interface",
     "cce-screenaver",
     "cce-authenticator",
     "cce-fonts",