Revert "feat: remote karma-credential-loader"

This reverts commit 6eb94f7.

Author: AllanZhengYP

packages/karma-credential-loader/.gitignore

@@ -0,0 +1,8 @@
+/node_modules/
+/build/
+/coverage/
+/docs/
+*.tsbuildinfo
+*.tgz
+*.log
+package-lock.json

packages/karma-credential-loader/.npmignore

@@ -0,0 +1,13 @@
+/src/
+/coverage/
+/docs/
+tsconfig.test.json
+*.tsbuildinfo
+
+*.spec.js
+*.spec.d.ts
+*.spec.js.map
+
+*.fixture.js
+*.fixture.d.ts
+*.fixture.js.map