Plugins: Remove bundled plugins feature (#96490)

* remove bundled plugins

* Add echo to command

Co-authored-by: Andres Martinez Gotor <andres.martinez@grafana.com>

* remove folder entirely

* remove folder from CODEOWNERS

---------

Co-authored-by: Andres Martinez Gotor <andres.martinez@grafana.com>

.github/pr-commands.json

@@ -14,7 +14,6 @@
       "public/**/*",
       "packages/**/*",
       "e2e/**/*",
-      "plugins-bundled/**/*",
       "scripts/build/release-packages.sh",
       "scripts/circle-release-next-packages.sh",
       "scripts/ci-frontend-metrics.sh",
@@ -437,4 +436,4 @@
     "action": "updateLabel",
     "addLabel": "area/panel/table"
   }
-]
+]