test: fix duplicate setupFilesAfterEnv in jest config

- remove duplicate key causing ESLint failure
- ensure single source of test setup configuration

Author: mahesh-09-12

jest.config.js

@@ -10,6 +10,5 @@ module.exports = {
 
     collectCoverage: true,
     collectCoverageFrom: ["js/**/*.js", "!js/vendor/**"],
-    coverageReporters: ["text-summary", "text", "lcov"],
-    setupFilesAfterEnv: ['<rootDir>/jest.setup.js'],
+    coverageReporters: ["text-summary", "text", "lcov"]
 };