remove cody code that was moved to separate cody repo (#54729)

Cody code is being moved to https://github.com/sourcegraph/cody. This PR
removes the moved code and configures this repository to use the
`@sourcegraph/cody-{shared,ui}` packages published by the new separate
Cody repository.

## Test plan

Ensure that the new separate Cody repository tests pass. Ensure that
this repository's tests pass now that it uses 2 npm packages published
by the new separate Cody repository.

.bazelignore

@@ -6,14 +6,6 @@ client/browser/node_modules
 client/build-config/node_modules
 client/client-api/node_modules
 client/codeintellify/node_modules
-client/cody/node_modules
-client/cody-cli/node_modules
-client/cody-icons-font/node_modules
-client/cody-shared/node_modules
-client/cody-slack/node_modules
-client/cody-agent/node_modules
-client/cody-ui/node_modules
-client/cody-web/node_modules
 client/common/node_modules
 client/eslint-plugin-wildcard/node_modules
 client/extension-api/node_modules

.vscode/launch.json

@@ -7,24 +7,6 @@
       "request": "attach",
       "mode": "local"
     },
-    {
-      "name": "Launch Cody Extension",
-      "type": "extensionHost",
-      "request": "launch",
-      "runtimeExecutable": "${execPath}",
-      "preLaunchTask": "Build cody",
-      "args": [
-        "--extensionDevelopmentPath=${workspaceRoot}/client/cody",
-        "--disable-extension=hpargecruos.kodj",
-        "--disable-extension=sourcegraph.cody-ai"
-      ],
-      "sourceMaps": true,
-      "outFiles": ["${workspaceRoot}/client/cody/dist/*.js"],
-      "env": {
-        "NODE_ENV": "development",
-        "CODY_FOCUS_ON_STARTUP": "1"
-      }
-    },
     {
       "name": "Launch sg rfc list",
       "type": "go",

.vscode/tasks.json

@@ -16,15 +16,6 @@
       "command": ["node_modules/.bin/tsc"],
       "args": ["--build", "tsconfig.all.json", "--watch", "--incremental"]
     },
-    {
-      "label": "Build cody",
-      "detail": "Build cody.",
-      "type": "npm",
-      "script": "build:dev",
-      "problemMatcher": "$tsc-watch",
-      "options": { "cwd": "client/cody" },
-      "isBackground": true
-    },
     {
       "label": "Watch web app",
       "detail": "Watch files and build the JavaScript bundle (no development server).",

CHANGELOG.md

@@ -21,6 +21,7 @@ All notable changes to Sourcegraph are documented in this file.
 
 ### Changed
 
+- Cody source code (for the VS Code extension, CLI, and client shared libraries) has been moved to the [sourcegraph/cody repository](https://github.com/sourcegraph/cody).
 - `golang.org/x/net/trace` instrumentation, previously available under `/debug/requests` and `/debug/events`, has been removed entirely from core Sourcegraph services. It remains available for Zoekt. [#53795](https://github.com/sourcegraph/sourcegraph/pull/53795)
 
 ### Fixed