apps-config: drop the foreign chains' type bundles

typesBundle carried overrides for 140 chains inherited from upstream;
none of them is a Pezkuwi chain. The live Pezkuwi and Zagros runtimes
(pezkuwichain, asset-hub-pezkuwichain, people-pezkuwichain, zagros and
its asset hub, bridge hub, collectives, coretime and people) match no
entry and need none: they carry metadata v14+.

The spec files, the Cere chain bundle, the custom derives and the 32
npm packages they came from are removed, among them GPL-3.0-only ones
(pontem, moonbeam, subsocial, jamton) that were bundled into this
Apache-2.0 app. The spec/chain/derives mechanism stays, empty, for a
chain that ever needs one. typesBundle.ts is regenerated (15 lines).
yarn.lock loses 3250 lines, elliptic and the old @polkadot/api trees
with them.

packages/apps-config/src/api/chain/index.ts

@@ -3,11 +3,7 @@
 
 import type { OverrideBundleDefinition } from '@pezkuwi/types/types';
 
-import cere from './cere.js';
-
-// NOTE: The mapping is done from chain name in system.chain
-const chain: Record<string, OverrideBundleDefinition> = {
-  'Cere Mainnet Beta': cere
-};
+// Type bundles by system.chain name; see spec/index.ts.
+const chain: Record<string, OverrideBundleDefinition> = {};
 
 export default chain;