chore(bun): Remove all references to jest (#15498)

Jest is not being used, we can remove all jest related code from this
package

Author: AbhiPrasad

packages/bun/jest.config.js

@@ -5,7 +5,7 @@
 
   "compilerOptions": {
     // should include all types from `./tsconfig.json` plus types for all test frameworks used
-    "types": ["bun-types", "jest"]
+    "types": ["bun-types"]
 
     // other package-specific, test-specific options
   }