feat: remove deprecated vscode package

Author: FabianStoll

Packages/manifest.json

@@ -6,7 +6,6 @@
     "com.unity.collab-proxy": "2.5.2",
     "com.unity.ide.rider": "3.0.31",
     "com.unity.ide.visualstudio": "2.0.22",
-    "com.unity.ide.vscode": "1.2.5",
     "com.unity.learn.iet-framework": "4.0.2",
     "com.unity.learn.iet-framework.authoring": "1.2.2",
     "com.unity.memoryprofiler": "1.1.1",

Packages/packages-lock.json

@@ -85,13 +85,6 @@
       },
       "url": "https://packages.unity.com"
     },
-    "com.unity.ide.vscode": {
-      "version": "1.2.5",
-      "depth": 0,
-      "source": "registry",
-      "dependencies": {},
-      "url": "https://packages.unity.com"
-    },
     "com.unity.learn.iet-framework": {
       "version": "4.0.2",
       "depth": 0,